Develop Bugs

Pixel C - fastboot unsupported command

Hi everyone ! (I apologyze for my english)
I cant flash anything on my Pixel C because of this:
C:\Users\ykant\Desktop\Minimal ADB and Fastboot>fastboot flash recovery TWRP_dragon_3.0.2-23.img
target reported max download size of 268435456 bytes
erasing 'recovery'...
FAILED (remote: unsupported command)
finished. total time: -0.000s
Click to expand...
Click to collapse
No system to boot on and my TWRP is wiped !!
--> Cant do this:
fwtool vbnv write dev_boot_fastboot_full_cap 1
Click to expand...
Click to collapse
Is my pixel C bricked now ?
regards !

Did you unlock your device first with "fastboot oem unlock"?

redukt said:
Did you unlock your device first with "fastboot oem unlock"?
Click to expand...
Click to collapse
Yes i did this before, i was running on Remix OS

I don't know if this is of relevance but there were new fastboot commands introduced from Android M (?) and I have recollection about "partial unlock" - two flags required to be set and if only one was set it could be reported that the bootloader was unlocked but fastboot saw it as locked. Above may be totally wrong.
Here's the difference between old and current fastboot commands. Note the new lock/unlock commands
Code:
************************ OLD **************************************
commands:
update <filename> reflash device from update.zip
flashall flash boot, system, vendor and if found,
recovery
flash <partition> [ <filename> ] write a file to a flash partition
erase <partition> erase a flash partition
format[:[<fs type>][:[<size>]] <partition> format a flash partition.
Can override the fs type and/or
size the bootloader reports.
getvar <variable> display a bootloader variable
boot <kernel> [ <ramdisk> [ <second> ] ] download and boot kernel
flash:raw boot <kernel> [ <ramdisk> [ <second> ] ] create bootimage and
flash it
devices list all connected devices
continue continue with autoboot
reboot reboot device normally
reboot-bootloader reboot device into bootloader
help show this help message
************************ NEW **************************************
C:\Program Files (x86)\Android\android-sdk\platform-tools>fastboot
usage: fastboot [ <option> ] <command>
commands:
update <filename> Reflash device from update.zip.
Sets the flashed slot as active.
flashall Flash boot, system, vendor, and --
if found -- recovery. If the device
supports slots, the slot that has
been flashed to is set as active.
Secondary images may be flashed to
an inactive slot.
flash <partition> [ <filename> ] Write a file to a flash partition.
flashing lock Locks the device. Prevents flashing.
flashing unlock Unlocks the device. Allows flashing
any partition except
bootloader-related partitions.
flashing lock_critical Prevents flashing bootloader-related
partitions.
flashing unlock_critical Enables flashing bootloader-related
partitions.
flashing get_unlock_ability Queries bootloader to see if the
device is unlocked.
flashing get_unlock_bootloader_nonce Queries the bootloader to get the
unlock nonce.
flashing unlock_bootloader <request> Issue unlock bootloader using request.
flashing lock_bootloader Locks the bootloader to prevent
bootloader version rollback.
erase <partition> Erase a flash partition.
format[:[<fs type>][:[<size>]] <partition>
Format a flash partition. Can
override the fs type and/or size
the bootloader reports.
getvar <variable> Display a bootloader variable.
set_active <slot> Sets the active slot. If slots are
not supported, this does nothing.
boot <kernel> [ <ramdisk> [ <second> ] ] Download and boot kernel.
flash:raw boot <kernel> [ <ramdisk> [ <second> ] ]
Create bootimage and flash it.
devices [-l] List all connected devices [with
device paths].
continue Continue with autoboot.
reboot [bootloader] Reboot device [into bootloader].
reboot-bootloader Reboot device into bootloader.
help Show this help message.

-Yazh- said:
Hi everyone ! (I apologyze for my english)
I cant flash anything on my Pixel C because of this:
C:\Users\ykant\Desktop\Minimal ADB and Fastboot>fastboot flash recovery TWRP_dragon_3.0.2-23.img
target reported max download size of 268435456 bytes
erasing 'recovery'...
FAILED (remote: unsupported command)
finished. total time: -0.000s
Click to expand...
Click to collapse
No system to boot on and my TWRP is wiped !!
--> Cant do this:
fwtool vbnv write dev_boot_fastboot_full_cap 1
Click to expand...
Click to collapse
Is my pixel C bricked now ?
regards !
Click to expand...
Click to collapse
Hi, I'm just wondering if you were able to fix your tablet. I ran into the same problem as you here and am not able to find a solution to it.

Hi !!
Sorry for bad news, but i didn't found any solution since my Pixel C was bricked. Maybe there is a solution, but I dropped it before finding it.
I hope you find something to fix it !

@viii_xvi Are you using "Minimal ADB and Fastboot" as shown in the post you quoted by -Yazh- ? The current (?) version that I can find is 1.4.3 and that looks to be "2015".
For the current versions of adb and fastboot and the revision history, 12 since October 2016, see https://developer.android.com/studio/releases/platform-tools.html

peterk-1 said:
Are you using "Minimal ADB and Fastboot" as shown in the post you quoted by -Yazh- ? The current (?) version that I can find is 1.4.3 and that looks to be "2015".
Click to expand...
Click to collapse
No. I used the 15 second ADB and Fastboot installer. I'm pretty sure it works fine as I can use fastboot commands.
peterk-1 said:
For the current versions of adb and fastboot and the revision history, 12 since October 2016, see https://developer.android.com/studio/releases/platform-tools.html
Click to expand...
Click to collapse
I don't really know what to do with the files found in the zip. If I'm doing it wrong, can you tell me what I should be doing?

viii_xvi said:
No. I used the 15 second ADB and Fastboot installer. I'm pretty sure it works fine as I can use fastboot commands.
I don't really know what to do with the files found in the zip. If I'm doing it wrong, can you tell me what I should be doing?
Click to expand...
Click to collapse
There are Youtube videos on installing Android Platform Tools and a web search for installing Android Platform Tools with your o/s will find many hits. You need to know you are installing just the platform tools - some of the guides assume you are installing or have installed the full Android Software Development Kit (SDK).
Assuming you are using Windows then the simplest method is to copy the contents of the zip file into the current location of your "15 second" files. This ensures that you can run the new version of fastboot with the folder path you have used previously. In file manager "find" fastboot.exe and that will give you the folder to unzip ALL of the platform tools files. You will know if you have done it correctly if you get requests to overwrite existing files when you unzip the files.

peterk-1 said:
There are Youtube videos on installing Android Platform Tools and a web search for installing Android Platform Tools with your o/s will find many hits. You need to know you are installing just the platform tools - some of the guides assume you are installing or have installed the full Android Software Development Kit (SDK).
Assuming you are using Windows then the simplest method is to copy the contents of the zip file into the current location of your "15 second" files. This ensures that you can run the new version of fastboot with the folder path you have used previously. In file manager "find" fastboot.exe and that will give you the folder to unzip ALL of the platform tools files. You will know if you have done it correctly if you get requests to overwrite existing files when you unzip the files.
Click to expand...
Click to collapse
I've followed the instructions so I'm confident I did it correctly. Despite this, nothing has improved. I still can't flash the stock ROM or a custom recovery in fastboot.
What I've noticed from updating the fastboot version are some new commands I found when I entered "fastboot -h"
Code:
fastboot -h
commands:
reboot [bootloader|emergency]
stage <infile>
get_staged <outfile>
options:
--skip-secondary
--skip-reboot
--disable-verity
--disable-verification
--unbuffered
--version
From what I've tried, all the commands in options returns
fastboot: usage: no command
Click to expand...
Click to collapse

viii_xvi said:
I've followed the instructions so I'm confident I did it correctly. Despite this, nothing has improved. I still can't flash the stock ROM or a custom recovery in fastboot.
What I've noticed from updating the fastboot version are some new commands I found when I entered "fastboot -h"
Code:
fastboot -h
commands:
reboot [bootloader|emergency]
stage <infile>
get_staged <outfile>
options:
--skip-secondary
--skip-reboot
--disable-verity
--disable-verification
--unbuffered
--version
From what I've tried, all the commands in options returns
Click to expand...
Click to collapse
Hi, Did you tried to flash with the oldest stock rom of the pixel C ? Because it uses older version of fastboot so maybe it will work. I has also the same problem as you but hopefully twrp still worked so i could flash another system image.

rhmanoa said:
Hi, Did you tried to flash with the oldest stock rom of the pixel C ? Because it uses older version of fastboot so maybe it will work. I has also the same problem as you but hopefully twrp still worked so i could flash another system image.
Click to expand...
Click to collapse
I have now tried to flash the earliest factory image and am disappointed to say the bootloader did not flash and so I wasn't able to complete the flashing.
I don't think the problem is the fastboot version. It may be the bootloader itself. I've read someone describe this problem as "Broken fastboot (bootloader) security." I think the problem is that, when unlocked, the bootloader would return the same messages as if it was locked. The security of the bootloader still thinks it's locked and not allow flashing of any images. Also that locking and reunlocking does not improve the situation. This would explain why, when bootloader is unlocked, I get "remote: unsupported command" and "remote: image verification failed", the same as when I try the same commands when the bootloader is locked.

viii_xvi said:
I have now tried to flash the earliest factory image and am disappointed to say the bootloader did not flash and so I wasn't able to complete the flashing.
I don't think the problem is the fastboot version. It may be the bootloader itself. I've read someone describe this problem as "Broken fastboot (bootloader) security." I think the problem is that, when unlocked, the bootloader would return the same messages as if it was locked. The security of the bootloader still thinks it's locked and not allow flashing of any images. Also that locking and reunlocking does not improve the situation. This would explain why, when bootloader is unlocked, I get "remote: unsupported command" and "remote: image verification failed", the same as when I try the same commands when the bootloader is locked.
Click to expand...
Click to collapse
Just bought today, same issue, have you solved it?

mansonstein said:
Just bought today, same issue, have you solved it?
Click to expand...
Click to collapse
No, I didn't manage to fix it.

did you found a solution yet？
I got a same problem,cant flash anything but ordinary using.
I got the problem caused by flashed twrp3.2.3,cant get into system,just always get into twrp.
cant flash any official firmware with "flash-all.bat",no matter which platform tool or firmware.but the twrp were installed before can flash anything.
finally,I flashed newest OTA firmware,then device can be booted. but got the unsupported command

richardwia said:
did you found a solution yet？
I got a same problem,cant flash anything but ordinary using.
I got the problem caused by flashed twrp3.2.3,cant get into system,just always get into twrp.
cant flash any official firmware with "flash-all.bat",no matter which platform tool or firmware.but the twrp were installed before can flash anything.
finally,I flashed newest OTA firmware,then device can be booted. but got the unsupported command
Click to expand...
Click to collapse
I'm assuming you have the latest version of TWRP installed. IIRC, there should be "Fix Fastboot" in advanced options. If indeed you have the same problem I had, pressing this should fix the problem. I don't know anything beyond this as I never got to find out what happens afterwards.

viii_xvi said:
I'm assuming you have the latest version of TWRP installed. IIRC, there should be "Fix Fastboot" in advanced options. If indeed you have the same problem I had, pressing this should fix the problem. I don't know anything beyond this as I never got to find out what happens afterwards.
Click to expand...
Click to collapse
really？where I can find the“fix fastboot in advanced options”？

richardwia said:
really？where I can find the“fix fastboot in advanced options”？
Click to expand...
Click to collapse
I believe I'm not qualified to help you as I disposed of my tablet months ago. All the advice I've given is off of memory and may not be accurate. That being said, I won't help you anymore in fear of giving inaccurate information that may lead to bricking of your tablet.

I have a pixel C, flashed with latest 3-rd pixel experience before, someday i tried to flash back to factory image, hit the same trouble like this topic, i came here several times before, no solution, today, i found another article about this , it's solved my trouble.
sorry i am new here, i couldn't share the outside article link.
would like to share what i did on my pixel c.
1. root your pixel c
2. adb shell //this command could be executed under recovery mode too.
3. su
4. fwtool vbnv write dev_boot_fastboot_full_cap 1
5. adb reboot fastboot
then you could flash anything you want.

I had this just now - I finally got fed up of my Pixel C being so laggy and also chrome opening up as blank pages (I switched to brace to fix this, but it's abit crashy).
Anyhow I found that after
adb reboot bootloader
that
fastboot flash recovery twrp.img
was failing for me in the "Writing" stage
I discovered that the fix was to use
adb flashing unlock
then it will ask you a question (power button to confirm and one of teh volume keys to cancel).
after this it spins with erasing for a while and then comes back to fastboot after which
fastboot flash recovery twrp.img
Worked, after this you get an annoying 30s delay for each restart, I think that can be fixed by
adb flashing lock
I'll verify this when I've finished flashing a usable ROM to my Pixel C...

Stuck in bootloader - no recovery - no system

Hi all,
unfortunatelly I can't get my pixel c working again. I'm stuck in bootloader and only fastboot commands work but with no success.
fastboot flash recovery twrp.img
target reported max download size of 268435456 bytes
erasing 'recovery'...
FAILED (remote: unsupported command)
Click to expand...
Click to collapse
fastboot boot twrp.img
creating boot image...
creating boot image - 13133824 bytes
downloading 'boot.img'...
OKAY [ 0.442s]
booting...
FAILED (remote: image verification failed)
Click to expand...
Click to collapse
All drivers (ADB, Fastboot, Google etc.) are installed and are up-to-date. Bootloader is unlocked and it seems BL reacts the same way like BL is locked.
System is not booting and recovery won't boot too. Is there any way to get an adb shell in another way?

Bolemichel said:
Hi all,
unfortunatelly I can't get my pixel c working again. I'm stuck in bootloader and only fastboot commands work but with no success.
fastboot flash recovery twrp.img
fastboot boot twrp.img
All drivers (ADB, Fastboot, Google etc.) are installed and are up-to-date. Bootloader is unlocked and it seems BL reacts the same way like BL is locked.
System is not booting and recovery won't boot too. Is there any way to get an adb shell in another way?
Click to expand...
Click to collapse
Have you tried flashing stock?

Bolemichel said:
Hi all,
unfortunatelly I can't get my pixel c working again. I'm stuck in bootloader and only fastboot commands work but with no success.
fastboot flash recovery twrp.img
fastboot boot twrp.img
All drivers (ADB, Fastboot, Google etc.) are installed and are up-to-date. Bootloader is unlocked and it seems BL reacts the same way like BL is locked.
System is not booting and recovery won't boot too. Is there any way to get an adb shell in another way?
Click to expand...
Click to collapse
Were you able to solve that?
FWIW, the state you're describing is not unheard of and requires to use the fwtool (reference, for example, here). But that, in turn, requires you can have TWRP installed... because with the bootloader in this limbo state, it also refuses to load TWRP on the fly using "fastboot boot ..."

xrad said:
Were you able to solve that?
FWIW, the state you're describing is not unheard of and requires to use the fwtool (reference, for example, here). But that, in turn, requires you can have TWRP installed... because with the bootloader in this limbo state, it also refuses to load TWRP on the fly using "fastboot boot ..."
Click to expand...
Click to collapse
No, meanwhile I returned it to google and got a new one. But thank you for help!

Moto Z2 force constantly bootlooping, Stock rom load but NO Wi-FI or Cellular network

I have struggled to fix my bootlooping problem , After install LOS rom/ other rom and flashing the Magisk. Everything installed fine, but for some reason, after restarting the system it will get to LOS loading screen and bootloop. I attempted to install a stock rom on it, but that load fine but it WIFI and Cellular Network doesn't work. The boot loader has been unlocked Any detail instruction will be highly appreciated. Thanks
Background info, I have spent more than 1 years using this awesome phone with Lineage OS 15.1 , I wake up one morning with the constantly boot looping. I have the T-Mobile version with the bootloader unlocked. I have also spent weeks going through and following other threads but haven't been able to resolved my issue.

sammd301 said:
I have struggled to fix my bootlooping problem , After install LOS rom/ other rom and flashing the Magisk. Everything installed fine, but for some reason, after restarting the system it will get to LOS loading screen and bootloop. I attempted to install a stock rom on it, but that load fine but it WIFI and Cellular Network doesn't work. The boot loader has been unlocked Any detail instruction will be highly appreciated. Thanks
Background info, I have spent more than 1 years using this awesome phone with Lineage OS 15.1 , I wake up one morning with the constantly boot looping. I have the T-Mobile version with the bootloader unlocked. I have also spent weeks going through and following other threads but haven't been able to resolved my issue.
Click to expand...
Click to collapse
Whenever you move from custom to stock and vice versa you should format user data. Easiest way is in bootloader mode, issue the command 'fastboot -w' w/o quotes.

41rw4lk said:
Whenever you move from custom to stock and vice versa you should format user data. Easiest way is in bootloader mode, issue the command 'fastboot -w' w/o quotes.
Click to expand...
Click to collapse
I applied the "fastboot -w" below is the output I got; Still no WIFI and Cellular network not working
-------------------------------------------------------------
PS C:\adb> fastboot -w
Erase successful, but not automatically formatting.
File system type raw not supported.
Erase successful, but not automatically formatting.
File system type not supported.
erasing 'userdata'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.005s
-------------------------------------------------

sammd301 said:
I applied the "fastboot -w" below is the output I got; Still no WIFI and Cellular network not working
-------------------------------------------------------------
PS C:\adb> fastboot -w
Erase successful, but not automatically formatting.
File system type raw not supported.
Erase successful, but not automatically formatting.
File system type not supported.
erasing 'userdata'...
(bootloader) Permission denied
FAILED (remote failure)
finished. total time: 0.005s
-------------------------------------------------
Click to expand...
Click to collapse
Do you have an imei number still? Is the bootloader still unlocked? Have you tried following the return to stock thread and doing a clean install of the latest TMO firmware?

41rw4lk said:
Do you have an imei number still? Is the bootloader still unlocked? Have you tried following the return to stock thread and doing a clean install of the latest TMO firmware?
Click to expand...
Click to collapse
The IMEI number is “Unknown” , Yes the bootloader is Unlocked because, I am able to flash TWRP image on the phone. Yes I spent close to a week following the return to stock thread, the first time I did it, the Cellular network come on about 30 minutes after the phone completed loading to the home screen. Thanks for the guidance

You need to blankflash, then flash the latest TMO firmware for your phone. Usually you lose baseband when you flash the wrong firmware, does it say XT1789-04 by the usb port?

sammd301 said:
The IMEI number is “Unknown” , Yes the bootloader is Unlocked because, I am able to flash TWRP image on the phone. Yes I spent close to a week following the return to stock thread, the first time I did it, the Cellular network come on about 30 minutes after the phone completed loading to the home screen. Thanks for the guidance
Click to expand...
Click to collapse
I would go through the unlock process again. Your bootloader shows flashing_locked

Uzephi said:
I would go through the unlock process again. Your bootloader shows flashing_locked
Click to expand...
Click to collapse
I follow the procedure to unlocked the bootloader again, it now shows "flashing_unlocked" as show in the photo below; I flashed another oem rom but still no wifi and network and Still Baseband /Baseline is < not found>

sammd301 said:
I follow the procedure to unlocked the bootloader again, it now shows "flashing_unlocked" as show in the photo below; I flashed another oem rom but still no wifi and network and Still Baseband /Baseline is < not found>
Click to expand...
Click to collapse
Can you link the flash all you used and how you flashed it?

Uzephi said:
Can you link the flash all you used and how you flashed it?
Click to expand...
Click to collapse
I have been following this tread on xda [ https://forum.xda-developers.com/z2-force/how-to/how-to-return-to-stock-sprint-t3694783 ]
Below is the steps
How to fix your phone:
Download the Utilities zip Link to the flash all https://www.androidfilehost.com/?fid=5862345805528053597
Extract the zip to it's own folder
Download the flash all for your device from the options below.
Extract the flash all zip into the same folder as the Utilities.
Run the Flashall.bat file
Watch windows command prompt put your phone back to stock!

sammd301 said:
I have been following this tread on xda [ https://forum.xda-developers.com/z2-force/how-to/how-to-return-to-stock-sprint-t3694783 ]
Below is the steps
How to fix your phone:
Download the Utilities zip Link to the flash all https://www.androidfilehost.com/?fid=5862345805528053597
Extract the zip to it's own folder
Download the flash all for your device from the options below.
Extract the flash all zip into the same folder as the Utilities.
Run the Flashall.bat file
Watch windows command prompt put your phone back to stock!
Click to expand...
Click to collapse
What zip did you use?
Edit: that thread uses AFH which has an older version bootloader than in your picture so something isn't going right. How long does it take to flash?
Edit 2: does your phone reboot after running the .bat file?

I used the T-Mobile Flash All zip the link was to google drive https://drive.google.com/file/d/1Bo_ry_38J6BHy4-A4fuhAnv94C5yV1TW/edit

sammd301 said:
I used the T-Mobile Flash All zip the link was to google drive https://drive.google.com/file/d/1Bo_ry_38J6BHy4-A4fuhAnv94C5yV1TW/edit
Click to expand...
Click to collapse
Yeah, that one is old. Try https://androidfilehost.com/?fid=11410963190603877456 just like the guide states, it should open command prompt and you should see it flashing. The process can take s minute or two. If it immediately closes within 30 seconds or hangs, it didn't flash

Uzephi said:
What zip did you use?
Edit: that thread uses AFH which has an older version bootloader than in your picture so something isn't going right. How long does it take to flash?
Edit 2: does your phone reboot after running the .bat file?[/QUOTE
Yes the phone does reboot by itself after running the .bat file, But it reboot back to bootloader screen.
Click to expand...
Click to collapse

Uzephi said:
Yeah, that one is old. Try https://androidfilehost.com/?fid=11410963190603877456 just like the guide states, it should open command prompt and you should see it flashing. The process can take s minute or two. If it immediately closes within 30 seconds or hangs, it didn't flash
Click to expand...
Click to collapse
I download the suggested rom [ https://androidfilehost.com/?fid=11410963190603877456 ] and flashed it to my phone running flashall.bat via Windows PowerShell,
It took approximately 6 minutes for the flashing to be complete, but with some minor error, Afterword the phone reboot back to the bootloader screen. After starting it still doesn't show the IMEI number and No cellular network or WIFI available.
The output of the flashing process is below along with the attach screenshot of the error;
Erase successful, but not automatically formatting.
File system type raw not supported.
erasing 'userdata'...
OKAY [ 0.803s]
finished. total time: 0.807s

sammd301 said:
I download the suggested rom [ https://androidfilehost.com/?fid=11410963190603877456 ] and flashed it to my phone running flashall.bat via Windows PowerShell,
It took approximately 6 minutes for the flashing to be complete, but with some minor error, Afterword the phone reboot back to the bootloader screen. After starting it still doesn't show the IMEI number and No cellular network or WIFI available.
The output of the flashing process is below along with the attach screenshot of the error;
Erase successful, but not automatically formatting.
File system type raw not supported.
erasing 'userdata'...
OKAY [ 0.803s]
finished. total time: 0.807s
Click to expand...
Click to collapse
Flash again, after it is done, type fastboot --set-active=other and then run it one last time. Then boot your phone.

Uzephi said:
Flash again, after it is done, type fastboot --set-active=other and then run it one last time. Then boot your phone.
Click to expand...
Click to collapse
After flashing the rom again, and getting the error " Erase successful, but not automatically formatting..." I input the fastboot command "fastboot --set-active=other" and I got back "unknown option -- set-active=other" as show in the image below. Was the syntax right?
I have been googling the errors I have received like "Erase successful, but not automatically formatting.
File system type raw not supported" to see if I can land on page that can help resolve the issue with the phone.

I have downloaded the latest adb and fastboot platform tools versions, after running the flashall.bat file, I still got the same error at the end. I follow up with the "fastboot --set-active=other" command and this time I got [ Setting current slot to '`' FAILED (remote: '') ] as show in the image below.

sammd301 said:
I have downloaded the latest adb and fastboot platform tools versions, after running the flashall.bat file, I still got the same error at the end. I follow up with the "fastboot --set-active=other" command and this time I got [ Setting current slot to '`' FAILED (remote: '') ] as show in the image below.
Click to expand...
Click to collapse
Seems it isn't recognizing other then, which it should. Do =_b then to see if you can swap to slot B

Uzephi said:
Seems it isn't recognizing other then, which it should. Do =_b then to see if you can swap to slot B
Click to expand...
Click to collapse
After inputting the command [ fastboot --set-active=_b ] the output I got back was [ Slot _b does not exist. supported slots are:
a
b ]
I proceed to input [ fastboot --set-active=b ] the output was [ Setting current slot to 'b' ]
So I the flashing again and input the [ fastboot --set-active=b ] again and got back [ Setting current slot to 'b' ]
I pressed the power button to start the phone from bootloader menu , the phone boot-loop with the Motorola logo as show, after 6 to 8 cycling of the boot looping with the Motorola logo the phone bootup again with T-Mobile logo. When it got home screen, I saw again that Network and cellular still not working and No IMEI number too.

[GUIDE] How to root your Asus Zenfone 6 without TWRP | Info about A/B

Hey guys and girls,
This is a bit of copy and paste for from my guide for the HTC U12+. I thought it might be helpful to people here too.
If you find mentions of the HTC U12+ please notify me and I will correct them.
I couldn´t find any guide on how to root the Asus Zenfone 6 without twrp yet, so I thought maybe it´s good to have one. It´s also useful for people who don´t like to boot/flash the recovery but want root access.
I also decided now to do a little write up about the A/B slot partition system.
General Information about the A/B slot partition system and seamless updates
Google firstly introduced seamless updates on the Pixel Phones and with it the A/B partition system.
So this means, contrary to non A/B devices, there are two copys of most partitions except userdata.
We have two system (system_a and system_b), two boot (boot_a and boot_b) and two vendor (vendor_a and vendor_b) partitions, amongst others (can be found further down in the partition list but let´s concentrate on these).
When booted in the OS, one slot is actively used and the other is "inactive".
The main advantage that emerges now is, that in case an OTA arrives the "inactive" partitions get updated, while the OS is running. That means while the actual OTA is happening you can use your phone just like you always do.
The following reboot will boot into the former "inactive" slot and use the seamless updated partitions. This happens seamless and just with a reboot. So OTAs are much faster!
If you are interested further here are some links:
https://www.xda-developers.com/list-android-devices-seamless-updates/
https://source.android.com/devices/tech/ota/ab/
https://source.android.com/devices/tech/ota/ab/ab_faqs
Here’s another writeup from the XDA portal!
https://www.xda-developers.com/how-...ess-updates-affect-custom-development-on-xda/
But here are a few tips and tricks:
How to reboot to bootloader to be able to use fastboot:
From booted OS with buttons: Press and hold power down until the screen goes black, then press and hold power and vol up to enter bootloader
non responding and the phone isn´t booting: press and hold power plus volume up to enter bootloader
From the OS or recovery via ADB (requires USB Debugging enabled in dev options):
Code:
adb reboot bootloader
How to get the active slot:
Code:
fastboot getvar current-slot
How to set the active slot:
A word of advice. If you don´t know what you´re doing you should probably not change slots. Because my U12+ only has a working A Slot. The B slot is without the first OTA or flashing a RUU unbootable.
Set active slot to a:
Code:
fastboot --set-active=a
Set active slot to b:
Code:
fastboot --set-active=b
How to extract the boot.img from a firmware.zip
1. Download the firmware zip from here : https://www.asus.com/Phone/ZenFone-6-ZS630KL/HelpDesk_Download/
2. Follow the steps described here: https://forum.xda-developers.com/nokia-7-plus/how-to/guide-how-to-extract-payload-bin-ota-t3830962
3. Obtain your boot.img
How to root your phone without TWRP
Prerequisites:
- unlocked bootloader
- USB-Debugging in developer options enabled
- latest adb and fastboot binaries (can always be found here
- working adb and fastboot environment
- magisk-patched boot.img
How to:
1. Download the latest magisk manager from here and install it on your phone: https://github.com/topjohnwu/MagiskManager/releases
2. Get a boot.img that fits your current firmware. Look at the point above, how to extract it from an Asus firmware zip.
Important: if you decide to use a pre-patched boot.img (available below), download it and place it in your fastboot folder, then skip to step 11!
3. Copy the extracted boot.img to your phone
4. Open the magisk manager app and tap two times on install
5. Now choose patch boot.img file and select the previously extracted boot.img you copied to your phone in the upcoming file chooser
6. Wait for the boot.img to be patched
7. Now connect your phone to your pc and make sure usb debugging is enabled in developer options
8. Open up a terminal in your fastboot folder and make sure adb is working by typing
Code:
adb devices
into terminal which should return your serial number
9. Pull the patches boot.img to your fastboot folder via:
Code:
adb pull /sdcard/Download/magisk_patched.img
10. Reboot to bootloader:
Code:
adb reboot bootloader
11. Flash the magisk patched boot.img:
Code:
fastboot flash boot magisk_patched.img
12. Congratulations you´re now rooted.
Pre-Magisk-Patched boot.imgs
Important: Make sure to download the correct version, that matches your firmware.
Downloads: https://www.androidfilehost.com/?w=files&flid=295609

Is it possible to do this and still get OTA updates from ASUS?

sidamos77 said:
Is it possible to do this and still get OTA updates from ASUS?
Click to expand...
Click to collapse
You need to unlock the bootloader for this which will prevent you from getting ota updates automatically from asus. But you can install updates manually.

Ok, great, thank you.

Remember, this will void your warranty (as per Asus' own definition). Sad, but true.
I would root it in an instant, but am hesitant due to warranty being void.

Any way to unofficially unlock the Bootloader?

vasra said:
Remember, this will void your warranty (as per Asus' own definition). Sad, but true.
I would root it in an instant, but am hesitant due to warranty being void.
Click to expand...
Click to collapse
In Europe unlocking the bootloader and rooting doesn't legally void warranty. It was ruled this way a few years ago.

Freak07 said:
[...]
Pre-Magisk-Patched boot.imgs
Important: Make sure to download the correct version, that matches your firmware.
Downloads: https://www.androidfilehost.com/?w=files&flid=295609
Click to expand...
Click to collapse
The folder WW_PHONE-16.1210.1904.75-0 which is the firmware my device has, is empty. Do you still have the prepatched boot.img of that version ? ASUS doesn't have that version for download anymore.
Thanks in advance.
If not: how can I update manually since I do not get any OTA Updates with a locked Bootloader ?

GRöder said:
how can I update manually since I do not get any OTA Updates with a locked Bootloader ?
Click to expand...
Click to collapse
https://swedroid.se/forum/threads/snabba-fragor-snabba-svar-zenfone-6.165775/page-26#post-2433773
https://swedroid.se/forum/threads/snabba-fragor-snabba-svar-zenfone-6.165775/page-37#post-2442236
Use Translator.

I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
Code:
fastboot flash boot magisk_patched.img
target reported max download size of 805306368 bytes
sending 'bootb' (47064 KB)...
OKAY [ 1.094s]
writing 'bootb'...
FAILED (remote: (bootb_b) No such partition)
finished. total time: 1.106s
the getvar command returns the following output:
Code:
fastboot getvar current-slot
current-slot: b
finished. total time: 0.009s
Do you have any advice for me ?
Edit:
After being curious and trying
Code:
fastboot flash boot_a magisk_patched.img
which worked, I tried to flash it at the active slot b explicitly:
Code:
fastboot flash boot_b magisk_patched.img
which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .

GRöder said:
I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
the getvar command returns the following output:
Do you have any advice for me ?
Edit:
After being curious and trying which worked, I tried to flash it at the active slot b explicitly: which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .
Click to expand...
Click to collapse
Did you download the latest adb and fastboot binaries from the link I provided in the OP?
Or did you use already existing ones or from a toolkit/easy installer etc. from somewhere on xda?
To me it sounds you were using outdated binaries.
Fastboot flash boot boot.img detects the active slot automatically if you’re on the latest binaries. Did it like this on the zenfone like on all other A/B devices I’ve owned so far and it works just fine.

Freak07 said:
Did you download the latest adb and fastboot binaries from the link I provided in the OP?
Or did you use already existing ones or from a toolkit/easy installer etc. from somewhere on xda?
To me it sounds you were using outdated binaries.
Fastboot flash boot boot.img detects the active slot automatically if you’re on the latest binaries. Did it like this on the zenfone like on all other A/B devices I’ve owned so far and it works just fine.
Click to expand...
Click to collapse
That might have been the the point. In fact, I did download them, but I used (definately outdated, because on my pc since literally years) a minimal adb and fastboot installation.
I didn't think about it, as this is my first A/B device.
I won't try it now with the latest ones, because it worked and I don't want to destroy something (since we still dont have a working TWRP for backup & recovery) but I guess you're right, and the problem were the outdated binaries.
Thank you.

GRöder said:
If not: how can I update manually since I do not get any OTA Updates with a locked Bootloader ?
Click to expand...
Click to collapse
Download the new Firmware from Asus and copy it to the root of sdcard. Unplug the usb cable or reboot or search for update in settings. It will find the update file and display a notification.

isthisadagger said:
Download the new Firmware from Asus and copy it to the root of sdcard. Unplug the usb cable or reboot or search for update in settings. It will find the update file and display a notification.
Click to expand...
Click to collapse
In fact, I tried that before I tried the stock-recovery-method (found it at the ASUS FAQ-pages), but it didn't work, even after a reboot, no notification showed up.

GRöder said:
I managed to update my device using the stock recovery. (There is a option like "apply update from sdcard") Now it is on the -133 Firmware, so I should've been able to use the existing, pre-patched boot of that firmware. When I tried to flash it, I got the following error:
Code:
fastboot flash boot magisk_patched.img
target reported max download size of 805306368 bytes
sending 'bootb' (47064 KB)...
OKAY [ 1.094s]
writing 'bootb'...
FAILED (remote: (bootb_b) No such partition)
finished. total time: 1.106s
the getvar command returns the following output:
Code:
fastboot getvar current-slot
current-slot: b
finished. total time: 0.009s
Do you have any advice for me ?
Edit:
After being curious and trying
Code:
fastboot flash boot_a magisk_patched.img
which worked, I tried to flash it at the active slot b explicitly:
Code:
fastboot flash boot_b magisk_patched.img
which worked, too. I'm having root, now.
The point is, to specify the partition precisely (e.g. with _a or _b).
Thank you for the guide, maybe you could add my findings to make it easier for others to root their devices, @Freak07 .
Click to expand...
Click to collapse
sorry guy,
how you unlocked the bootloader ? for me official tool asus doens't work. error due to internet connection is the message.
please can you explain every step ? thanks

Ya how do we unlock the bootloader without asus knowing it

MirkoMirko9 said:
sorry guy,
how you unlocked the bootloader ? for me official tool asus doens't work. error due to internet connection is the message.
please can you explain every step ? thanks
Click to expand...
Click to collapse
nikhil18 said:
Ya how do we unlock the bootloader without asus knowing it
Click to expand...
Click to collapse
I used the official app, while the device was connected to the internet. So yes, ASUS knows that I unlocked the device.
The device was still at the -75 firmware, when I did it.
 @MirkoMirko9 If you can live with asus knowing that you unlocked the device, try it again with active internet connection.
As far as I know, there is no other method yet.

unable to unlock bootloader with the official unlock device tool, it is showing network error although my network is alright. Any workaround?

QuazIqbal said:
unable to unlock bootloader with the official unlock device tool, it is showing network error although my network is alright. Any workaround?
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=79817571&postcount=31

magisk_patched boot.img for .156 firmware is uploaded to the patched boot.imgs folder

Help with root for Alldocube M5X Pro

I am in over my head once more and could use help from someone more experienced.
The problem?
I bought an Alldocube M5X Pro tablet for my kids. First thing I did was root it using Magisk. I found the stock ROM, extracted the boot.img file, patched it with magisk manager, unlocked the bootloader and then used the fastboot command to flash the modified boot.img. Smooth sailing, worked flawlessly, kids were happy. 2 kids, 1 tablet, the happiness didn't last too long. They both wanted to use the tablet all the time. So when I found a sales promotion for the same model tablet, I decided to buy one more. Tablet #2 arrives, also an Alldocube M5X Pro, model T1006, Kernel version 3.18.60, Android version 8.0.0, same as tablet #1. I go through the same steps, but when I try to flash the modified boot.img file on the new tablet, it tells me Remote: Flash WRITE failure.
Here's what I did, step by step:
1. I verified that the 2nd tablet had the same build number as the 1st tablet. It did: T1006_V1.01_20200504
2. I enabled USB debugging in developer options and set the OEM Unlock option to ON
3. I trusted the connected computer in order to use the adb commands
4. I rebooted to the bootloader and executed the command Fastboot OEM unlock
C:\adb>fastboot oem unlock
...
(bootloader) Start unlock flow
OKAY [ 7.825s]
finished. total time: 7.826s
Click to expand...
Click to collapse
5. I executed the command Fastboot Flash boot magisk_patched.img with the img file in the path from where I'm running the command
C:\adb>fastboot flash boot magisk_patched.img
target reported max download size of 134217728 bytes
sending 'boot' (10253 KB)...
OKAY [ 0.468s]
writing 'boot'...
FAILED (remote: flash write failure)
finished. total time: 0.633s
Click to expand...
Click to collapse
6. I've tried erasing the cache and user data partitions from the stock recovery and repeating step 5, but received the same error.
And that's where I'm stuck. The tablet can reboot from there, will detect tampering and proceed to run an erase command and starts with the Android Setup tutorial.
Just for the hell of it I tried flashing the stock ROM using the SP Flash tool for Mediatek devices, which works just fine. I then tried tried flashing an older build (0304) but still received the same error when trying to flash the boot.img
I also tried flashing a custom recovery as well as booting a recovery.img but in both cases the tablet ends up booting normally, I assume because the custom recovery isn't compatible with this device.
Everything I find online about flash write failure errors seems to indicate a defective emmc however most of those are specific to the Nexus 5 phone. The difference here seems to be that I can unlock the bootloader just fine, it stays unlocked as far as I can tell and I can overwrite with a new ROM, so I'm thinking the emmc is fine.
I'm just trying to puzzle this together from what I can find online, but I could really use the help of someone with more insight into the inner workings of Android.
Any help would be greatly appreciated.

After flashing 4 different ROMs, formatting the emmc completely and doing lord knows what else, it finally dawned on me that I could simply flash the patched boot image using the SP Flash tool instead of via Fastboot. It does wipe the data, and starts the Android setup wizard, but once that is completed, I was able to install Magisk Manager and download the missing files. The device rebooted after that and came back with systemless root.
Problem solved.