Develop Bugs

[SOLVED] Sideload from recovery: Watch does not appear in adb devices

Hi all,
I have seen mentions in several places (including here http://9to5google.com/2014/12/18/how-to-update-android-wear-manually-ota-downloads/ and there http://forum.xda-developers.com/showpost.php?p=61430452&postcount=6 ) that it is possible to sideload an OTA to the SmartWatch 3 without using fastboot or rooting, just rebooting in recovery and running adb sideload.
However, in my case, although the watch properly appears in "adb devices" when it's powered on, when I go into recovery, it does not appear anymore... And thus I can't run "adb sideload" as adb, obviously, says "no devices found"
Any idea? Am I missing some trick? I have tried this both on Windows 8 and on Ubuntu, both behave in the exact same way.
I have also tried going into recovery using two different means: "adb reboot recovery" and using the menu that has fastboot/recovery options, nothing solves the issue.
Thanks!
PS: The reason why I am trying to sideload the OTA is to go 4.4 -> 5.0.1 and not 4.4 -> 5.1.1 because of all the 5.1.1 issues + I hate 5.1.1 UI

Did you click the adb sideload button in recovery? This enables adb.
If that does not work, try using fastboot to temporarily boot twrp from fastboot, but you will need to install fastboot drivers on your p.c. and find a 4.4 version of twrp.
The command is
Code:
fastboot boot twrp.img
From there you should be able to use adb.

Hi!
Do you mean selecting the "sideload" option in recovery? Yes I have selected this (by swiping down and then right to validate the choice) and my device still does not show up in adb. Have you been able to do this on the SmartWatch3? I feel like most people have experience with the LG G Watch...
In order to flash TWRP. I need to unlock the bootloader, don't I? If I can avoid voiding my warranty, that'd be great...
Thanks!

My first thought was the sideload option. I did not do it, but am on an SW3. I went right to option 2.
This does not unlock your boot loader, or void your warranty. What it does is hotboot another Rom (in this case recovery) without writing it to disk. I did do this, and it worked well.
This is the thread I followed. Skip the fast foot unlock step. That. An void your warranty.
http://forum.xda-developers.com/showthread.php?t=3107501

Oh! This is pretty awesome. Trying it, thanks a lot!

YESS! lekofraggle, I owe you a good one
So, for future readers, here is the procedure I went through. I have tried many different ways, this is the only which yielded results, so I'll only explain this one:
1) First, make sure that when your watch is connected to your phone, it displays the notification prompting you to upgrade your andoird wear version (I am not sure it will work if you don't have this notificaiton) (note that this notification only appears when the watch is connected to the phone in bluetooth, for me)
2) Follow http://forum.xda-developers.com/showthread.php?t=3107501 instructions to hot boot TWRP 5.0.2 (yes, even though you're in 4.4, does not matter (too much)). (command: fastboot boot twrp.img)
3) Root your watch by downloading the rooting zip from http://forum.xda-developers.com/attachment.php?attachmentid=3342605&d=1433157678 and "adb push yourzip /sdcard/root.zip"
4) In TWRP, your watch, go to "Install" and select "root.zip". You watch is now rooted.
5) Reboot your watch in normal android boot. Now push the OTA zip to it: "adb push yourota.zip /sdcard/update.zip"
6) Now is the trick: Replace the official OTA by yours: do "adb shell" and then "rm /cache/update.zip" and "cp /sdcard/update.zip /cache/update.zip".
7) Now check you still have the notification prompting for upgrade (your watch needs a bluetooth connection to phone, else it does not display it). Check the zip in /cache is still your by looking at the size, for instance: "ls -l /cache/update.zip" and compare with the size of your file.
8) If you're confident it is still your file, use the notifcation prompt on the watch and say you are ready to apply the upgrade.
9) Watch restarts and upgrade.... using your OTA file !
I tried using the custom "recovery command" that tutorials like http://www.carbontesla.com/2014/12/tutorial-update-smartwatch-3-lwx48p-android-5-0-1/ tell you to use but it would not work for me, only the notification would really trigger the upgrade...
Hope it helps!
PS: The reason for not using "adb sideload" directly from TWRP is that my OTA package (4.4 -> 5.0.1) would not be applied, it would complain that I am trying to apply it from a 5.0.2 system while it should be applied from a 4.4 system (oh, really?).

Great, I am glad it worked for you.
Two points for others travelling this path.
1)I am not sure you need to be rooted to do this, because twrp has its own permissions.
2) Did you try to use the install update.zip feature of twrp? That should have worked too.
Either way, I am glad you got there.
~Leko

[Root]Wileyfox Swift

Hi all,
found out how to root this device!
Here the steps:
Make sure you have fastboot installed on your computer: https://wiki.cyanogenmod.org/w/Fastboot
download supersu zip from here
https://download.chainfire.eu/696/supersu/
save it to your external sdcard
enable developer options (settings - about - click mutliple times on the build number).
enable OEM unlock in the developer options settings on the device.
reboot Wileyfox Swift into fastboot mode: with the device powered down, hold the Volume Up and connect USB
to unlock the boot loader, WARNING!!! This wipes your user data!!!
on your computer type
Code:
fastboot oem unlock
fastboot -i 0x2970 oem unlock-go
fastboot oem unlock-go
download latest recovery image from here
http://download.cyanogenmod.org/?device=crackling
to boot the custom recovery, on your computer type
Code:
fastboot boot <name_of_recovery>.img
OR
install recovery
Code:
fastboot flash recovery <name_of_recovery>.img
and reboot into recovery manually (remove and reinstall battery, hold volume down and power buttons.
install supersu update zip from recovery menu (choose zip from extenal SD)
reboot and enjoy root access

Thanks
I went a step forward and installed the CM nightly.

mermigas said:
Thanks
I went a step forward and installed the CM nightly.
Click to expand...
Click to collapse
Does the camera work? I tried one of the first nightlies but the camera crashed, so this was no option for me.

olli_o said:
Does the camera work? I tried one of the first nightlies but the camera crashed, so this was no option for me.
Click to expand...
Click to collapse
No problem with camera for me.
All works fine and smooth
No bugs nored

olli_o said:
4) reboot directly into recovery. Normal system boot reinstalls stock recovery.
5) install supersu update zip from recovery menu
Click to expand...
Click to collapse
When in recovery I press apply update and sd card, before i've even selected supersu, which returns:
Install failed
Installation aborted
Installation aborted
any ideas?

monethys said:
When in recovery I press apply update and sd card, before i've even selected supersu, which returns:
Install failed
Installation aborted
Installation aborted
any ideas?
Click to expand...
Click to collapse
This is stange. I modified the instructions a little, does it also happen if you follow these steps?

OTA?
Will I be able to update my phone (ota?) after the root?
I'm fine with having to reroot

rebane2001 said:
Will I be able to update my phone (ota?) after the root?
I'm fine with having to reroot
Click to expand...
Click to collapse
Incremental auto-update won't work rooted. But you can manually update. See here

Followed instructions and now have a rooted wileyfox swift thank you

olli_o said:
Hi all,
found out how to root this device!
Here the steps:
download supersu zip from here
save it to your external sdcard
enable developer options (settings - about - click mutliple times on the build number).
enable OEM unlock in the developer options settings on the device.
reboot Wileyfox Swift into fastboot mode: with the device powered down, hold the Volume Up and connect USB
to unlock the boot loader, WARNING!!! This wipes your user data!!!
on your computer type
Code:
fastboot oem unlock
fastboot -i 0x2970 oem unlock-go
fastboot oem unlock-go
download latest recovery image from here
to boot the custom recovery, on your computer type
Code:
fastboot boot <name_of_recovery>.img
install supersu update zip from recovery menu (choose zip from extenal SD)
reboot and enjoy root access
Click to expand...
Click to collapse
In case anyone has a similar issue:
I could unlock. I could install the recovery. But SuperSU was coming up with signature errors and wouldn't install. I discovered that this was because the recovery was being overwritten (I flashed it to the device because "fastboot boot..." was not working).
I could not get the device to flash the recovery then reboot to recovery without it going into normal boot first and rewriting the recovery so that I would not be able to install SU.
The solution I found for this was to take the back of the phone off.
Flash the recovery: fastboot flash recovery "recovery file name".img
Then just pull the battery.
Hold the volume down when you put the battery back in and launch the device still holding volume down.
Remember to release the power button once you see fox logo or you'll reboot again.
Now I installed SuperSU without a hitch and all is good.
Hope that helps anyone who is stuck.
Links removed from quote so as not to trigger spam bot.

Help
olli_o said:
Hi all,
found out how to root this device!
[*]download latest recovery image from here
/download.cyanogenmod.org/?device=crackling[/
[/LIST]
Click to expand...
Click to collapse
All the list from here is a nightly build. Can you give the stable mod? I'm noob so can follow it. it is very hard for me to make it work I'm still working to install the fast boot for mac. I found this:
bash <(curl -s htps:/raw.githubusercontent.com/corbindavenport/nexus-tools/master/install.sh)
It seems to work when i check this command:
adb devices
BUT NOT SURE if this is safe.
Please provide link for recovery or rom which i can follow using your guide. There are many in the link above but which one is stable and i can use that all the of the system functioning.
Thank you in advance.

I hope this will help someone figure things out w/ what i did... LOL
Thanks ALL. Basically the post above helped to root my phone but its been hard for me and as mentioned in my previous post, I'm noob. So here is what i did after the fastboot issue and continue on even though i didn't know if the install is safe since my OS X was able to detect the device/phone as mentioned above.
1. On fastboot, i just use "fastboot devices" to verify my phone is connected. This command did not work "fastboot -i 0x2970 devices"
2. Then use, "fastboot oem unlock-go" and i waited about 20sec as the terminal returned that message and then it was confirmed unlocked. These commands did not work "fastboot oem unlock, fastboot -i 0x2970 oem unlock-go" my terminal just froze and did nothing.
3. Then i use this to check if it is unlocked "fastboot oem device-info"
4. Using the link on downloading the recovery, i just click all of upper part with the picture and found the .img file see below:
Swift
Wileyfox - crackling
Download Latest Nightly (this is .zip file)
Download Latest Nightly Recovery (this is the .img file which i used)
Device Wiki 2016-01-07
5. update: i did erase recovery "fastboot erase recovery"
i use two commands and both works "fastboot flash recovery cm-12.1-20160107-NIGHTLY-crackling-recovery.img"
(here is the terminal msg: target reported max download size of 268435456 bytes
sending 'recovery' (23110 KB)...
OKAY [ 0.727s]
writing 'recovery'...
OKAY [ 0.387s]
finished. total time: 1.114s)
and this "fastboot boot cm-12.1-20160107-NIGHTLY-crackling-recovery.img"
(here is the terminal msg:downloading 'boot.img'...
OKAY [ 0.727s]
booting...
OKAY [ 0.186s]
finished. total time: 0.913s)
(I LEARNED THE HARD WAY THE .img file must be IN THE SAME DIRECTORY of the fastboot - but PLEASE ASK THE EXPERTS and don't copy if i did something wrong)
6. Next should be the auto reboot that suppose to happen but it didn't. So i took " k_web9000" advice and just pull the battery off (i didn't have any choice its not doing anything... heheh).
6. To boot in Recovery - i followed this :With the device powered down, hold the Volume Down and Power buttons.
7. Next should install the SuperSU.zip file (Please make sure to use chrome since my Safari auto unzip the file and wasted so much of my time troubleshooting... i mean hours retracing my steps ...funny) Just update it and locate the sdcard and look for the .zip file
8. Then it just rebooted after the install and on the boot screen i saw 4 files that where updated.
9. Finally, i checked for the root by downloading root checker and it was verified rooted.
Now you have been noobified
A SYSTEM UPDATE POP-UP 12.1 YOG7DAS2FI Incremental about 48MB BUT DIDNT TOUCH IT, What do i need do? Can i update?
PLEASE LET ME KNOW HOW TO UPDATE TO THE LATEST ONE WITHOUT LOSING MY ROOT.
OR HOW TO INSTALL CYANOGENMOD easy way please . i can see CYANOGEN OS 12.1-YOG4PAS33J on my device
PLEASE HELP. THANKS

You cannot update whilst you are rooted.
If you want to have the latest then CM Nightly is your best option.
How to
https://wiki.cyanogenmod.org/w/Install_CM_for_crackling

How?
mermigas said:
You cannot update whilst you are rooted.
If you want to have the latest then CM Nightly is your best option.
How to
]https://wiki.cyanogenmod.org/w/Install_CM_for_crackling]
Click to expand...
Click to collapse
Thanks for the info and link!! Awesome!
" 4. In ClockworkMod Recovery, use the physical volume buttons to move up and down. On most devices, the power button is used to confirm a menu selection, but for some devices a physical home key acts as a selector. Some devices have touch enabled ClockworkMod Recovery, in which case you may be able to swipe to, or touch, menu selections.
5. Optional (Recommended): Select backup and restore to create a backup."
In the link you gave, how did they get the clockworkmod recovery? I downloaded & installed it in the google store but it say can not use due to the device not listed. All icons are grayed and i also tried TWRP same issue.
The link also pointed to the nightly build, is there a stable release, doesn't need much update, i can use daily and without the hiccups.
Lastly, if there is no clockworkmod, how do you get it backup as recommended in the link you gave and as quoted above.
Many thanks in advance.

There is only official CM recovery and back up is not possible. Use Titaniumfor back up. You can also use twrp recovery posted in general section. Nightlies are more than stable.

Something is not right...
mermigas said:
You cannot update whilst you are rooted.
If you want to have the latest then CM Nightly is your best option.
How to
https://wiki.cyanogenmod.org/w/Install_CM_for_crackling
Click to expand...
Click to collapse
i was afraid of updating coz my data might be deleted but it seems the OTA update didn't delete my data. My version now is 13.0-20160127-NIGHTLY-crackling but the downside is the google play is not present anymore. i will try install the gapp again.
i don't know if i did it right, some say you need TWRP but it works just fine w/o TWRP in updating via OTA. I also try to install TWRP but i can't get it to work, so i can backup my phone. Last option is what you suggested the titanium backup.
Please let me know if i did right and the gapp if this always going to be installed again. i will be using the same gapp file and report what happen. thanks
Report:
i tried to install gapp file but i didn't use the previous gappfile since the it needs for 6.0 android and i used arm64 but gave error:70 which is the space issue via emulated option. So i go to cyangenmod recovery>apply update> from sdcard1 and "install failed - installation aborted". I can't even see the files on my sdcard. How do you now fix this?
Also can i have the right TWRP file and instruction for Wileyfox Swift PLEASE? thanks

Something went wrong! Please help
I can't to get the gapp to installed.
I wipe everything using the cm recovery and i also was able to install TWRP recovery and it does always hangs when installing the gapp -arm64-aroma (i can choose what to install). I also reinstall 12.1 and 13 but failed again when installing any gapp even in nano version (please note that i wipe everything). in my last attempt i wipe: dalvik, system, cache, data, internal storage & android secure but nothing works to install the gapp. Btw, when i wipe from the 1st time i always get this error "e: unable to find partition size for '/recovery"
PLEASE HELP

I had a few problems doing this from Ubuntu 15.10.
1. ADB did not see the device although it worked fine on my Nexus 4 showing that adb/fastboot were configured correctly. I had to go to /home/.android and create the document 'adb_usb.ini' (right click, new document) which contains the text '0x2970'.
Once this was done I had to run the following commands
adb kill-server
adb start-server
This allowed ADB to see the device but it said that it was offline.
2. I had to create the file /etc/udev/rules.d/51-android.rules (type into terminal 'sudo nano /etc/udev/rules.d/51-android.rules') and paste in the following line, save it (ctrl+x, y, enter).
SUBSYSTEM=="usb", ATTR{idVendor}=="2970", ATTR{idProduct}=="2282", MODE="0666"
sudo service udev restart
After this ADB and fastboot recognized the device and allowed me to follow the directions posted above or on the cyanogenmod wiki.
Hope that is of some use to someone!!!

Also the Cyanogen Recovery was both unpleasant to use and caused problems trying to install GApps, I had to switch to using the unofficial TWRP recovery which worked first time and is a much better interface.

Hey do we need to unlock a bootloader before installing the custom recovery on this device? Thanks.

Custom recovery TWRP for Infocus bingo 21 m430

Working TWRP custom recovery for infocus m430 bingo 21.
To do this, you would require:
data cable if not rooted phone
stock marshmallow running infocus m430 bingo 21
if not rooted, you need adb and fastboot installed on your computer-> google this if never heard of.
download attachments of this post(twrp_recoveryimg)
Problems:
Before you do this, you need to know the temporary problems you would encounter and their solutions
TWRP is in other language but you can use this link to bring it back to english, 1 time thing
http://www.teamandroid.com/2017/04/30/change-twrp-recovery-language-english/
if the above link does not work out, there are lot of youtube videos to enable english in twrp. google out.
once mobile boots into recovery, it will not come back to normal. There is a bit being set by infocus on some partition to reboot to recovery always. Until i find it, you would have to use following the process below to come back to normal boot.
Steps to come back to normal boot
1. in recovery, select option advanced
2. select adb sideload option
3. swipe to start sideload(this will start adb in recovery mode)
4. cancel
5. in your computer type
Code:
adb reboot bootloader
6. After mobile shows fastboot mode: in top of the screen with infocus logo type the below command
Code:
fastboot continue
7. This should boot your device back to normal android boot.
8. You have to do this every time you boot to recovery.
Now follow the below procedures to get a custom recovery on your mobile.
Procedure 1 : (does not require root)
unlock developer options -> google this if you never knew this until now.
unlock oem. Do this by going to developer options -> oem unlocking(enable).
unzip the recovery image attachment
enter fastboot by typing following command.
Code:
adb reboot bootloader.
flash twrp_recovery.img in the attachement. Do this by using following commands.(place your twrp_recovery.img in the current directory of terminal / cmd)
Code:
fastboot erase recovery
fastboot flash recovery twrp_recovery.img
Procedure 2 : (requires root) I have not tried this but it would work. Try it on your own risk.
Download the attachments
send them to your mobile sdcard
install mobile uncle tools or similar app from play store which would flash recovery images
select install recovery and point to the twrp_recovery.img in your sdcard.
Message me in case of questions or reply this thread.

Sir,where to type the code 'adb reboot bootloader' and other codes?

Want your contact number, for the purpose of custom recovery.
I tried that steps many times on my phone via pc. So help me for the custom recovery. I want your contact number to do this process correctly without worrying any problem occurs on my phone.

You should be able to find youtube video on how to install adb and fastboot online. After that, you should type those commands in command prompt in windows computer if you have or in terminal if you have linux or mac.
[email protected] said:
Sir,where to type the code 'adb reboot bootloader' and other codes?
Click to expand...
Click to collapse

Gimme your whatsapp or telegram number, i should be able to reach you out.
iyyappan001 said:
I tried that steps many times on my phone via pc. So help me for the custom recovery. I want your contact number to do this process correctly without worrying any problem occurs on my phone.
Click to expand...
Click to collapse

Problem while using adb fastboot method in In focus M425
What about infocus M425 phone ????

XT1676 - Stuck in Unlocked Bootloader, after Wipe Cache(?!)

Some informations at first:
XT1676 Moto G5, Fine Gold, 16GB
(TYPE M2675/ FCC ID: <known>/ SEQ#: <known>)
2017-10-30
Problem: Stuck in unlocked Bootloader
Hi all,
i am stuck on bootloader and cant get out.
On my PC I have "Minimal ADB and Fastboot"(v. 1.4.2.) installed and after i open a command prompt(admin) and type
- "fastboot devices" my phone is listed as <NR> fastboot
so that works as the only positive thing i can say
- "adb reboot", *daemon not running. starting it now on port 5037*
*daemon started successfully*
error: no devices/ emulators found
- "adb reconnect", error: no devices/ emulators found
i am not into the adb commands at all, i am a dummy and i would be so glad if someone could lead me out of my problem.
Maybe a word how i got into there:
1) i installed the minimal adb and fastboot(v1.4.2.)
2) i unlocked the bootloader by doing that over the Motorola UNLOCK Bootloader site
3) then i rooted & Flash Twrp Recovery (twrp-3.1.1-0-cedric)
with "fastboot flash recovery twrp-3.1.1-0-cedric.img"
4) first time entered into twrp recovery and i did the following:
A) a factory wipe-> reboot back to recovery mode->
B) install no-verity-opt-encrypt-5.1-> reboot and let system start before i turn off phone and enter bootloader(vol down+start) again
C) after entering recovery mode again, i install Magisk-v11.6 -> reboot->
D) now everything seemed to work, the system started properly rooted.
E) but then i decided to flash once again the Magisk-v11.6 followed by wipe data/ factory reset cause i wanted to completly do the flashing all over.
(dont ask me why i did it.. i could explain and tell you my intention but well it happened anyway and brought me to where i am stuck now)
but that was on this move not all yet: i also wipe dalvik cache
so after wipedalvik/ cache , since that moment i couldnt access to my SD Card anymore as it simply didnt show up anymore.
after a restart i was my first time in an endless bootloop of that Screen with "Erasing"(, the letters sourrounded by a spectral colored circle)
i had to disconnect the phone from power . also i tried to remove the battery for a day. but it would only get me back into that bootloop and only get me out by removing the battery...
i dont know anymore what happened then when the phone now got stuck in the bootloader instead of the bootloop. But yea, now i am stuck here, appreciating any help :highfive:
more infromation from my bootloader screen:
AP Fastboot Flash Mode(secure)
BLB8.12 (<known>, 2017-04-19 11:00:47)
Baseband <known>
Product/ Variant: cedric XT1676 16GB P5
Serial Number: <known>
CPU: MSM8937
eMMC: <known>
DRAM: <known>
Console [NULL]: null
Tools Mode Config: DISABLED
Battery OK
flashing_unlocked
Software status: Official
Connect USB Data Cable
- When pressing <Start>
Your device has been unlocked and can't be trusted.
to learn more, visit:
motorola,com/ unlockbootloader
ID: bad key
Your device will boot in 5 seconds.
->
bevor the Phone drops back to Bootloader
when pressing <RESTART BOOTLOADER>
it restarts to BOOTLOADER
- When pressing <Start Recovery>
Your device has been unlocked and can't be trusted.
to learn more, visit:
motorola,com/ unlockbootloader
ID: bad key
Your device will boot in 5 seconds.
->
after 10 seconds another screen poops up:
"Erasing", the letters sourrounded by a spectral colored circle for 3 seconds,
bevor the Phone just drops back to Bootloader
(talking about Erasing ..)
- When pressing <POWER OFF>
Power Off works
- When pressing <FACTORY RESET>
Your device has been unlocked and can't be trusted.
to learn more, visit:
motorola,com/ unlockbootloader
ID: bad key
Your device will boot in 5 seconds.
->
bevor the Phone just drops back to Bootloader
- When pressing <BARCODES>
Barcodes are shown
- When pressing <BP TOOLS>
Your device has been unlocked and can't be trusted.
to learn more, visit:
motorola,com/ unlockbootloader
ID: bad key
Your device will boot in 5 seconds.
->
bevor the Phone just drops back to Bootloader
- When pressing <QCOM>
Your device has been unlocked and can't be trusted.
to learn more, visit:
motorola,com/ unlockbootloader
ID: bad key
Your device will boot in 5 seconds.
->
bevor the Phone just drops back to Bootloader
- When pressing <BOOTLOADER LOGS>
Display shows:
AP Fastboot Flash Mode(secure)
Fastboot Reason: UTAG "bootmode" configured as fastboot
When connecting an USC- cable
Transfer Mode: USB Connected
...shows up but i cant get any adb commands to work tho ofc i am a dummy at it...

oh my, i just helped myself by reading my first poste here on the forum from 2016.
i made it now to start twrp by downloading the twrp_cedric_3.1.1-0 once again putting the recovery in my adb folder and type
<fastboot flash recovery twrp.img>
followed by <fastboot reboot-bootloader>
i am curious if i can get going now and if my SD card will be read and if i can get a new flash going...

now back in twrp i go first again to wipe/ factory reset.
now going to reboot, and reboot back into recovery. only gets me back to bootloader from where i can enter twrp manually now(but there is already an indication of the problem i have?)
also before the reboot, it doesnt ask me to install the twrp app anymore where i usually choose "do not install".
now i go to install the <no-verity-opt-encrypt-5.1>, flashing it successfully as it says at the end of the process but there is also some error message in the log before the ...done:
Failed to mount '/data' (invalid argument)
now i thought i should be able to boot the system again but i only get back into the bootloader...
can someone help me how to proceed correctly?
did i miss something to flash?

Techcri said:
now back in twrp i go first again to wipe/ factory reset.
now going to reboot, and reboot back into recovery. only gets me back to bootloader from where i can enter twrp manually now(but there is already an indication of the problem i have?)
also before the reboot, it doesnt ask me to install the twrp app anymore where i usually choose "do not install".
now i go to install the <no-verity-opt-encrypt-5.1>, flashing it successfully as it says at the end of the process but there is also some error message in the log before the ...done:
Failed to mount '/data' (invalid argument)
now i thought i should be able to boot the system again but i only get back into the bootloader...
can someone help me how to proceed correctly?
did i miss something to flash?
Click to expand...
Click to collapse
For failed mount data goto wipe & select format data (option on the right)
Reboot to recovery
For always going into recovery either you don't have a rom installed or read the faq section on my twrp thread as the answer is there

First of all thanks TheFixItMan, that you are behind it and your thread looks really cool and i will immediatly read and try to understand it!
For now i am stuck in the following:
TheFixItMan said:
For failed mount data goto wipe & select format data (option on the right)
Reboot to recoverye
Click to expand...
Click to collapse
i went to "wipe" & "select format data"
the process shows successfully and "...done" but in the log there is a line of red letter:
<Red Letter>"Failed to unmount '/data' ( Device or resource busy)"
<White Letter> You may need to reboot recovery to be able to use / data again.
i went back and to reboot and recovery.
but recovery wouldnt be booted but i get back to the bootloader(maybe that is still an indication of the problem i have here?)
manually entered recovery i did the select format data again but <red letter> line remains.
TheFixItMan said:
For always going into recovery either you don't have a rom installed or read the faq section on my twrp thread as the answer is there
Click to expand...
Click to collapse
i will parallel read your thread now, thx for being behind it solving the questions! :good:

Techcri said:
First of all thanks TheFixItMan, that you are behind it and your thread looks really cool and i will immediatly read and try to understand it!
For now i am stuck in the following:
i went to "wipe" & "select format data"
the process shows successfully and "...done" but in the log there is a line of red letter:
<Red Letter>"Failed to unmount '/data' ( Device or resource busy)"
<White Letter> You may need to reboot recovery to be able to use / data again.
i went back and to reboot and recovery.
but recovery wouldnt be booted but i get back to the bootloader(maybe that is still an indication of the problem i have here?)
manually entered recovery i did the select format data again but <red letter> line remains.
i will parallel read your thread now, thx for being behind it solving the questions! :good:
Click to expand...
Click to collapse
You have to select recovery from the bootloader menu to enter recovery
You can also type in a terminal window whilst phone connected to pc in fastboot
fastboot erase userdata
This will erase all internal data (the same as format data in twrp)

Important Notes For Stock Rom Users
When you first start TWRP it will ask you to swipe to allow modifications - If you do this your stock rom will no longer boot unless you disable dm-verity.
This can be done either by flashing a disable dm-verity zip or by flashing SuperSu zip which will disable it for you
Click to expand...
Click to collapse
ok, stock rom didnt boot so i flashed the "no-verity-opt-encrypt-5.1" .zip
and voila, i could boot the stock again finally! yipie!
but three things i noticed:
1) the boot progress is suspicous / wrong/ stuck at a moment:
"hello" and "moto" i still see and before the letters of moto start spinning around, the screen freezes for like 2-3 seconds and the next ting i see is the red mouth and cameleon and so on
2) i tried to test camera real quick and it says camera is busy
camera unable to start. if this repeats please power off your phone and restart.
(i did already 5 restarts now and still same problem)
anyway, i wanted to install a ROM now, something like Cyanogenmod.
in this context i wonder what the Magisk-v11.6 does? Does it just give superuser permission and is it always required?
3) system only gives me option to Power Off System(no reboot possible)
and that power off and turn on always gets me first into bootloader tho i dont press vol down+start
Edit:
ok, i have here 3 issues still but it goes offtopic already. i throw a thanks first of all at TheFixItMan and then i think thread cna be closed.
I will soon try to install a ROM, like LineageOS 15.1 , and hope that my previous 3 issues will be solved in the process. . .

Techcri said:
ok, stock rom didnt boot so i flashed the "no-verity-opt-encrypt-5.1" .zip
and voila, i could boot the stock again finally! yipie!
anyway, i wanted to install a ROM now, something like Cyanogenmod.
in this context i wonder what the Magisk-v11.6 does? Does it just give superuser permission and is it always required?
Click to expand...
Click to collapse
Cyanogenmod is now lineageos
Use the latest version of magisk to root (see official magisk thread on xda)
You can run modules to mod phone without tripping integrity or dm-verity which if false will stop apps that check if you are rooted from working
Magisk hide can hide apps from detecting you are rooted on a per app selected basis
3) system only gives me option to Power Off System(no reboot possible)
and that power off and turn on always gets me first into bootloader tho i dont press vol down+start
Click to expand...
Click to collapse
Phone should power off normally
If it can't be started normally without going in bootloader and selecting normal startup see my faqs in twrp thread & follow guide to wiping the misc partition
Note if flashing lineageos 15.1 you will require the 64bit version of TWRP available on the lineageos thread - I did not compile this & don't support it
It also doesn't support encryption as far as I know so if you are encrypted you will need to format data & remove it else the rom will get stuck at the decryption screen

TheFixItMan said:
Phone should power off normally
Click to expand...
Click to collapse
it can be powered off normally as long as its not connected per usb (power or pc)
If it can't be started normally without going in bootloader and selecting normal startup see my faqs in twrp thread & follow guide to wiping the misc partition
Click to expand...
Click to collapse
that was not exactly the problem. my problem is that either i press restart system from system or from recovery, i first get a stop at the bootloader. from there i can just toggle to START and confirm. then my system boots. its just that i first need to confirm in bootloader the Start, always!
at this point i tried now anyways from your Official TWRP For Moto G5 Cedric- Thread |||||| your solution from your faq. But yea, it obviously doesnt fit my problem cause putting the lines in cmd prompt gave me that result and boot still does a stop at bootloader.. before i can start system or recovery..
So yea, after the first codeline didnt trigger for an unknown reason for me...
i hadnt the courage to even try the second more relevant codeline!
Note if flashing lineageos 15.1 you will require the 64bit version of TWRP available on the lineageos thread - I did not compile this & don't support it
It also doesn't support encryption as far as I know so if you are encrypted you will need to format data & remove it else the rom will get stuck at the decryption screen
Click to expand...
Click to collapse
btw, Thx a lot for the information, i appreciate it! i choose LineageOs 15.1 and it runs now. atm i am reading myself into magisk. Also big thanks for your tipp looking up the official thread.

Techcri said:
it can be powered off normally as long as its not connected per usb (power or pc)
that was not exactly the problem. my problem is that either i press restart system from system or from recovery, i first get a stop at the bootloader. from there i can just toggle to START and confirm. then my system boots. its just that i first need to confirm in bootloader the Start, always!
at this point i tried now anyways from your Official TWRP For Moto G5 Cedric- Thread |||||| your solution from your faq. But yea, it obviously doesnt fit my problem cause putting the lines in cmd prompt gave me that result and boot still does a stop at bootloader.. before i can start system or recovery..
So yea, after the first codeline didnt trigger for an unknown reason for me...
i hadnt the courage to even try the second more relevant codeline!
btw, Thx a lot for the information, i appreciate it! i choose LineageOs 15.1 and it runs now. atm i am reading myself into magisk. Also big thanks for your tipp looking up the official thread.
Click to expand...
Click to collapse
That error means your phone is not connected to your pc
Make sure you have enabled adb debugging in phones dev settings before booting into recovery
If you type
adb devices
It will list all devices attached
Once your device is listed the commands will work

TheFixItMan said:
That error means your phone is not connected to your pc
Make sure you have enabled adb debugging in phones dev settings before booting into recovery
If you type
adb devices
It will list all devices attached
Once your device is listed the commands will work
Click to expand...
Click to collapse
and you think that your commands fromyour solution here helps me with my issue that i can start straight to everywhere i want? Cause atm I just always have to go over the bootloader -"stop". From there i have then to manually "START" in order to start system (now: LineageOS 15.1:victory or where i have to manually toggle down to "RECOVERY MODE" and start TWRP.
Well, i would give it a try, but yea dunno what i am doing wrong here atm. i just realized that the command "adb devices" never worked for me yet, cause i got in conflict with the command fastboot adb devices which effectivly works for me. Cause before i installed lineageOS 15.1 i had to flash the twrp cedric 3.2.1-0 x64. i did that over the adb command prompt:
Code:
fastboot flash recovery twrp.img
and in that process i even let my phone restart to bootloader with
Code:
fastboot reboot bootloader
.
now i went to tab build nummer 7 times-> dev options "on" -> android debugging enabled.
when i go to bootloader now or to recovery, and connect my device, for a strange reason in command prompt "adb devices" shows that:
... i dont know why the cmd "adb devices" doesnt show my device. maybe there is a twrp setting i need to change?

Techcri said:
and you think that your commands fromyour solution here helps me with my issue that i can start straight to everywhere i want? Cause atm I just always have to go over the bootloader -"stop". From there i have then to manually "START" in order to start system (now: LineageOS 15.1:victory or where i have to manually toggle down to "RECOVERY MODE" and start TWRP.
Well, i would give it a try, but yea dunno what i am doing wrong here atm. i just realized that the command "adb devices" never worked for me yet, cause i got in conflict with the command fastboot adb devices which effectivly works for me. Cause before i installed lineageOS 15.1 i had to flash the twrp cedric 3.2.1-0 x64. i did that over the adb command prompt:
Code:
fastboot flash recovery twrp.img
and in that process i even let my phone restart to bootloader with
Code:
fastboot reboot bootloader
.
now i went to tab build nummer 7 times-> dev options "on" -> android debugging enabled.
when i go to bootloader now or to recovery, and connect my device, for a strange reason in command prompt "adb devices" shows that:
... i dont know why the cmd "adb devices" doesnt show my device. maybe there is a twrp setting i need to change?
Click to expand...
Click to collapse
Does it display a device when the phone is fully booted
If yes than the recovery you are using doesn't support adb (my official recovery does)
If no I recommend downloading the full android sdk and using the adb that comes with that (you will find it in the platform tools folder where you installed it)

Hello, thx for your support.
I linked the wrong picture. This Screeny shows the related cmd (when dev enabled, booted to recovery, connected via usb to pc and typed adb devices).
Does it display a device when the phone is fully booted. If yes than the recovery you are using doesn't support adb (my official recovery does)
Click to expand...
Click to collapse
it shows the same like linked above and when in recovery mode
so no , the 64bit version of twrp cedric 3.2.1-0 prolly isnt the problem.
If no I recommend downloading the full android sdk and using the adb that comes with that (you will find it in the platform tools folder where you installed it)
Click to expand...
Click to collapse
ok i will try that. and the command prompt i have to open from the directoryy<platform tools folder> then right?
would you deinstall minimal ADB and fastboot before installing full android sdk?

TheFixItMan said:
If no I recommend downloading the full android sdk and using the adb that comes with that (you will find it in the platform tools folder where you installed it)
Click to expand...
Click to collapse
still my phone isnt found
- sdk tools installed
- dev enabled
- adb debugging enabled
- command prompt opened at "...\android-sdk\platform-tools"
either in recovery nor in booted system nor in bootloader "adb devices" finds my phone
so the problem with the "bootstop" (have always to manually press "START" at bootloader) persists..
oh wait... i am not connected as admin! is it possible to open an admin command promp:silly:t?
so i am am reading here atm how to open command prompt in specific folder(platform-tools)
but wife is waiting for dinner so i better do that first..

Techcri said:
still my phone isnt found
- sdk tools installed
- dev enabled
- adb debugging enabled
- command prompt opened at "...\android-sdk\platform-tools"
either in recovery nor in booted system nor in bootloader "adb devices" finds my phone
so the problem with the "bootstop" (have always to manually press "START" at bootloader) persists..
oh wait... i am not connected as admin! is it possible to open an admin command promp:silly:t?
so i am am reading here atm how to open command prompt in specific folder(platform-tools)
but wife is waiting for dinner so i better do that first..
Click to expand...
Click to collapse
On windows 7 - hold shift then right click a white empty space of the window where adb is & select open command prompt here
Windows 7 or 10 - search for cmd then right click on cmd and select run as administrator then navigate using cd commands to adb location or copy & paste location (if any spaces in path then put the entire path in quotation marks)

On windows 7 - hold shift then right click a white empty space of the window where adb is & select open command prompt here
Click to expand...
Click to collapse
yes i did that before as non admin
Windows 7 or 10 - search for cmd then right click on cmd and select run as administrator then navigate using cd commands to adb location or copy & paste location (if any spaces in path then put the entire path in quotation marks)
Click to expand...
Click to collapse
i use win7 and cd'ing to the path was almost getting annoying
as screenshot shows, it still doesnt work

in my desperation i deinstalled now all adb drivers(minimal+ sdk)
ran a ccleaner and cleaned registry and reinstalled minimal adb again (btw, there was a new version by now out, 1.4.3)
so the episodes still goes on and i could figure out some new details
because i bought the same phone again for a relative who needed a phone..
in the process of setting it up correctly( thankfully xda is around ) i enabled dev options and the adb debugging
here is the result for the new phone
that shows now that executing as admin or standard user wasnt the problem. i just did it as standard user..
then i thought "hey cool, wait, i connect now my own G5 and see if i can get the phones' Nr displayed there and make sure my phone can communicate with my pc over adb( dunno if the sentence just made sense- greetz from a dummy)"
what happened is shown in this screenshot .. same picture as before! :crying:
(dont get irritated by the screeny because i used the same command prompt for
first, the new phone and
second, my "old" phone which doesnt boot properly, if you look at the command and the result
i am lost!
is it possible to reinstall a bootloader? or how come my phone doesnt communicate with the pc anymore?
and how come that effects the booting process so that i always get this "stop" at the bootloader although i pressed for a restart?
can i do any more tests that indicates what problem i have here?

[GUIDE] Root and unbrick steps for ASUS ZenPad C 7.0 (P10Z - Z170C)

Hi all! It took me a lot of time to finally being able to root this tablet. It's old, slow and practically unusable, but with some tricks it can be made much, much better. I'm going to explain what you need to do to root this tablet, and in case of brick (which happened to me many, many times) how to unbrick it. I even got to a point where I could not even boot into recovery mode, and only fastboot was working, that was scary, but I managed to get out. Every single file I will use will be bundled in a ZIP you can download, and I'll try to make sure this link stays up, because there's nothing more frustrating than wanting to make these things in the future only to find out the link is dead, along with all your hopes. Before we begin, a little disclaimer:
Code:
#You, and only you are responsible for everything that you do or happens to your tablet.
#If you screw up, I have a number of backups to help you recover, but if that's not enough don't point a finger at me.
#I will not be babysitting anybody to help restore their tablet or recover lost data.
#This process WILL wipe all of your data, do a backup before beggining.
#YOU HAVE BEEN WARNED!
1. ENABLING USB DEBUGGING
This is a very basic step, but it's needed if you want to even begin to do this. You'll need to go to "Settings -> About Phone". There, look for a line that says "Compilation Number" (or something like that) and tap it multiple times. You will see a message pop up saying "You are now a developer" (I wish it was that easy). Go back to the settings screen, you will see a new option appeared called "USB Debugging". Enable it, and make sure "Developer Options" are enabled too at the very top of the screen. Now, connect the tablet to your computer. You will see a message pop up asking for permission, tap "Always allow from this computer" and press "Allow".
That's it for this step.
2. SETTING UP ADB TOOLS AND MAKING SURE THEY WORK
Now that we have USB debugging enabled, and we have allowed our PC to access the tablet, we can begin setting up ADB. The required files are attached in the zip.
Extract the "platform-tools" folder and move it somewhere nice. Then open it, hold shift and right click in a white space and select the option "Open command window here". CMD will pop up, now type:
Code:
adb devices
It will probably say something about a server followed by a list of attached devices. If you see a serial number there, then great! ADB is working as it should. If not, make sure the tablet is connected, that USB Debugging is on, and if all else fails, try with another cable.
Now for the juicy part.
3. UNLOCKING THE BOOTLOADER
We will have to unlock the bootloader if we want to do anything here. Here's what to do. Type:
Code:
adb reboot fastboot
Wait until the tablet reboots into fastboot. Once there type:
Code:
fastboot oem unlock
fastboot oem unlock confirm
This should unlock the bootloader.
NOTE: This method of unlocking is reported to not work anymore, but I listed it anyway just in case, as it doesn't hurt to try. If this is not working for you, don't panic, it's normal, use the following code instead:
Code:
fastboot oem asus-go
fastboot oem asus-go confirm
This should work, and the bootloader should be unlocked now.
4. INSTALLING THE REQUIRED FIRMWARE
Now, your tablet may or may not have the required firmware for the procedure, but just in case we will flash one that's sure to work. If you followed along, you should be in fastboot mode right now. Type:
Code:
fastboot reboot
Your tablet should boot as normal, without any changes (unless the first bootloader unlock method worked for you, in which case it probably wiped all of your data). Now we can access ADB once again, so type:
Code:
adb reboot recovery
The tablet will reboot into recovery mode and you should see an image of wasted android with an open belly (if you don't see this it doesn't matter). You should see a list of options with blue text, you must use the volume keys to navigate this menu. If you don't see any options, press any volume key and they should appear. If instead of getting into recovery mode, the tablet just turned off, then go to the "Fixing recovery" section.
In this menu, you must select "Wipe data/factory reset". This will, obviously, wipe all of your data. Once that finishes, select the "Install update through ADB" option. Once that's done, make sure the "updated_firmware.zip" file is in the same directory as the "adb.exe" file, then type:
Code:
adb sideload updated_firmware.zip
This will install the firmware, it will take about 20 mins. Once finished, reboot the device. You may think it got bricked at this point, fear not, the first boot really takes this long (about 10 mins).
Once everything is done, the device should boot up and everything should be exactly as it was when you took it out of the box, meaning, it doesn't even remember your wifi password. Do a quick (but proper) set up and enable USB Debugging again, make sure to allow the PC again (and check the "always allow" box). Also, scroll down a bit more in the developer options section and look for one that says "Verify apps installed through USB" or something of that kind. Make sure it's unchecked. Now, we gotta install root.
5. ROOTING
The all holy root, finally here. Type this into the terminal:
Code:
adb reboot fastboot
You should be familiar with this process by now. Once in fastboot mode, type:
Code:
fastboot boot root.img
Once finished, reboot. You should boot up as a rooted user, hooray! Only one final step, we gotta give ourselves some means to control this new power, that's where the SuperSU app comes into play.
6. INSTALLING SUPERSU
Apparently, not every single SuperSU apk file works... but lucky for you, I managed to scout and bundle one that does, so use that one. Make sure the apk file is in the same folder as "adb.exe" (as with all of the previous files) and type:
Code:
adb install supersu-2-82.apk
Leave it a few mins, and you should see a "success!" message when it's finished. Open the SuperSU app and it will tell you that you need to update the binaries. Say yes to that, and when asked wether to do a "Normal" update or "TWRP" update, select normal. It should be successful and prompt you to reboot, do so.
That's about it, you now have root access in the ASUS ZenPad C 7.0.
NOTE: Every single attempt I made to make the SuperSU app a system app resulted in the app crashing and I needed to reinstall it again, do as you please.
Why would you even want to do this you might ask? Well, I personally used this to make a few tweaks with Kernel Auditor and L Speed, two apps that will let you customize the performance of the machine to its maximum... sacrificing battery of course. You can search online for the best configuration for you for these apps. With the right tweaks, it transforms from **** to usable, and you need root for all of this.
As a quick note, you might notice that the SuperSU pop up that prompts you wether to grant or deny root access to an app is delayed, that's just how life is with this machine, it's slow. As a tip, when an app is trying to acquire root access, go back to the home screen and open the SuperSU app, then go back to the app you were trying to give it access to, it should appear quicked that way. Sometimes it's so slow that the app says I don't have root, only to have the pop up appear 10 seconds later. Now... to a final chapter.
7. UNBRICKING
This would be the end of the story if nothing went wrong, you have a rooted tablet and you can now do whatever you want with it, but that's not how life is. **** happens, things can go wrong, and when they do, you better have a backup plan. I don't know how to get back your ex, but I know how you can unbrick your tablet if that should happen. Follow these steps if you want to recover this machine...
Code:
#This process will wipe all data, but you shouldn't care about that since you can't access it anyway.
So, if the tablet doesn't turn on and gets stuck at the boot up screen, what can we do? Well, let it sit at the boot up screen for a few mins, and then type in the terminal:
Code:
adb devices
If it's recognized, then type:
Code:
adb reboot recovery
If it's not recognized, press the power button and the volume down key until the tablet turns off. Once that happens, press the power button and the volume down key, when the logo appears, let go of the power button and keep the volume down key pressed, that should boot the tablet into recovery mode. If you got into recovery mode, skip to 7.2
7.1 FIXING RECOVERY MODE
Sometimes, (it happened to me), recovery mode is broken.... it just doesn't appear, no matter what you do you can't get into it. To fix this, we gotta flash it again. We gotta enter fastboot mode. One option is to boot up the device until it gets stucked and wait a few mins, then adb should be able to recognize it and you type:
Code:
adb reboot fastboot
If that's not the case, turn the tablet off and press power and volume up, that should get you to fastboot. Once there type:
Code:
fastboot devices
And the tablet should appear there, if it doesn't... well it better do. I don't really know what to do if it doesn't appear there, but there shouldn't be a reason for it not to. I guess you can try to enter fastboot once again, with the tabler connected from the beggining or something like that, let's just assume it does, and if it doesn't then I'm sorry to tell you that's homework you will have to do.
Once here, we must format the cache and the data partition, for that type the following:
Code:
fastboot format cache
fastboot format userdata
Now, we need to get the recovery files, grab them from the zip I gave you. The files in question are "recovery.bin" and "vrl.bin". We will start with vrl. Once the two formats are finished, type:
Code:
fastboot flash vrl vrl.bin
Followed by:
Code:
fastboot flash recovery recovery.bin
Once that's done, press the power button and volume down keys until the tablet turns off. Then, press them again until the logo appears, and when that happens let go of the power button, that should get you (finally) into recovery.
7.2 UNBRICKING (FOR REAL THIS TIME)
Well, now that everybody is on the same page, and we could get to recovery mode, it's time to repeat some steps really... Follow the procedure from step 4 onwards (from the part that tells you to go to recovery). So, wipe data and apply that damn zip with sideload, the tablet should work now.
That's all I have to offer guys. I'm not a developer, I'm just a guy with a bunch of free time on his hands, so I was able to gather all of this information and (most importantly) files so you can root and fix this god damn tablet. Until the next one!
FINAL NOTE: In the files I included, there's a TWRP.img file. This is the TWRP custom recovery. As far as I know, this version should work with this tablet, but I was unable to flash it and make it work. IF YOU WANT TO TRY THIS DO SO AT YOUR OWN RISK, IT'S HIGHLY PROBABLE THAT THIS WILL RESULT IN BRICKING YOUR TABLET AND BREAKING THE STOCK RECOVERY, IN WICH CASE YOU WILL NEED TO FOLLOW THE STEPS STATED IN THIS GUIDE.
I couldn't upload the files as an attachment directly... sorry.
The "updated_firmware.zip" file is added as a separate download because it's a bigger file, and I prefer to let people decide if they even want it in the first place.
updated_firmware.zip
Everything else

None of the 8 drivers from Intel or Google detect the device in fastboot mode. I tried fixing this tablet years ago and had the fastboot drivers. As far as I know I have the same ones. These all loaded with no problem, but I could never get ADB Device to detect it in fastboot mode
Google: Android ADB Interface | Android Bootloader Interface | Android Composite ADB Interface
Intel: Android ADB Interface | Android Bootloader Interface | Intel AndroidADB Interface | Intel Android Bootloader Interface | Intel Android Composite ADB Interface

neghvar said:
None of the 8 drivers from Intel or Google detect the device in fastboot mode. I tried fixing this tablet years ago and had the fastboot drivers. As far as I know I have the same ones. These all loaded with no problem, but I could never get ADB Device to detect it in fastboot mode
Google: Android ADB Interface | Android Bootloader Interface | Android Composite ADB Interface
Intel: Android ADB Interface | Android Bootloader Interface | Intel AndroidADB Interface | Intel Android Bootloader Interface | Intel Android Composite ADB Interface
Click to expand...
Click to collapse
Make sure you enable usb debugging, no driver will work without that enabled.

tralph3 said:
Make sure you enable usb debugging, no driver will work without that enabled.
Click to expand...
Click to collapse
Not possible. This hangs during boot up or I can enter fast boot mode. It has been like this for years. Basically a soft brick. I tried to fix this years ago as stated above, but having seen this latest post about it, I decided to try again. But this time, I cannot find a fastboot driver that shows the device as attached when I run ADB devices

neghvar said:
Not possible. This hangs during boot up or I can enter fast boot mode. It has been like this for years. Basically a soft brick. I tried to fix this years ago as stated above, but having seen this latest post about it, I decided to try again. But this time, I cannot find a fastboot driver that shows the device as attached when I run ADB devices
Click to expand...
Click to collapse
Be aware that when in fastboot mode, adb devices never lists anything, you must use "fastboot devices"

tralph3 said:
Be aware that when in fastboot mode, adb devices never lists anything, you must use "fastboot devices"
Click to expand...
Click to collapse
Yep! That's where I was messing up. Thank you.
And the tablet is now working. Thank you very much.
One last question though. I tried to install the twrp.img file included in the pack
fastboot flash recovery TWRP.img
Here is what I got
Sending 'recovery' (26588 KB) (bootloader) Ready to receive: 0x019f7000 size of data
OKAY [ 0.741s]
Writing 'recovery' (bootloader) Flashing partition: recovery
FAILED (remote: ' Download image size is large than partition size')
fastboot: error: Command failed
How do I get around this if the image file is too large?

neghvar said:
Yep! That's where I was messing up. Thank you.
And the tablet is now working. Thank you very much.
One last question though. I tried to install the twrp.img file included in the pack
fastboot flash recovery TWRP.img
Here is what I got
Sending 'recovery' (26588 KB) (bootloader) Ready to receive: 0x019f7000 size of data
OKAY [ 0.741s]
Writing 'recovery' (bootloader) Flashing partition: recovery
FAILED (remote: ' Download image size is large than partition size')
fastboot: error: Command failed
How do I get around this if the image file is too large?
Click to expand...
Click to collapse
Yeah I never could get around it either. I never could install a custom recovery on this tablet, it just wasn't made for it. But hey, root is cool.

Work?
Still working?

jerryspring said:
Still working?
Click to expand...
Click to collapse
Why wouldn't it? This tablet ain't gonna change. Everything should work no problem.

Hi, any custom rom for this device to make it useful ?
It is in my drawer for more than 2 years and I just do not know what with it
Also how to play with settings in root mode so I can make it faster ?

Hey folks,
I recently followed this guide and a couple of issues.
First, I had expected all my data to be gone, which is fine. But it wasn't. I seemed to have gotten all the way through without it being reformatted, and this makes me suspect I never really achieved all the goals.
One thing I should note, in recovery boot, I had to use the volume button to select a source. No big deal, but it had not worked until I guessed I needed to do that.
Oh, and another thing is I had to install the driver package, and then after, once it was rebooted into fastboot, manually guide the device manager to select from list.
It seems after complete shutdown and then a fresh bootup, my SuperSU software was gone. So, is this only a tethered root boot? Is there a completely untethered?
After rebooting again, it seems my device will not complete booting, but I will give it some more time. I may have bricked it, though I have no idea how lol. All I did was enable USB debugging again and issued the reboot command.
I know this is an old guide, and probably long forgotten by most participants, but I recently got one of these tablets online, open box but new or like new, for around $20, and I would like to get it rooted because otherwise, it is extremely sluggish and the battery drains very fast. I read online it is google play services at fault, but I do not know for sure.
Anyway, if anyone has any updated info or alternative method to achieve full root access untethered, please advise. Unless this guide is that, in which case I just need to try again. Just out of curiosity, what is the TWRP.img for?