Develop Bugs

[Q] Help! Accidentally deleted system and can't restore or install

Coming from a phone with microSD extension, I had never encountered such an issue:
I bought this phone with a stock 4.2 Rom installed and tried to install a custom Rom. I first installed the latest version of touch recovery (tried it and it seemed to work fine) and did a backup using the default settings. Then I erroneously chose to format system and data, thinking that I could then "install from zip". Strangely, these steps deleted everything in the /sdcard directory and I couldnt select "external SD" (because the phone isnt equipped with it anyways?). Then I made a second mistake and restarted the phone, despite the message warning that I no longer had an OS installed. I took the battery out, and then held the power down while pressing the power button. The phone couldn't get into recovery, but instead showed a screen with the android logo, a large "Start" sign above it, and "Downloading...", "Do not turn off target !!" below it. Pressing the power button now got the phone to show just "Google" and a lock logo under it. The PC (windows 7) can not detect the phone throughout the process.
I tried the latest tool kit and samsung's USB driver but couldnt get the phone recognized by the PC.
Does this mean that the phone is doomed???
Please help!!!
Trent

Relax, it's not easy to 'doom' your Nexus. Especially with all the hard-workers in XDA
Try accessing Recovery mode by holding down BOTH vol up + vol down, as well as power. Holding just vol down + power is 'Download Mode', and at the least you can get to this. Means your phones far from doomed

Thanks a lot for the reply!
As a matter of fact, I also figured out how to get back to recovery (if only I had read your post earlier, my pain would've been much less!). But the problem remains that I can not get a target ROM onto the phone, since: 1. whatever I did seemed to have gotten rid of the nand backup supposedly stored in /data/media/TWRP/BACKUPS/ (I'm using TWRP V. 2.3.2.1). 2. I can not get my PC(or Mac, for that matter) to recognize the phone or the internal storage.
Any pointer from here?
Thanks again!!!
Trent

You can download a factory image and install with fastboot. It's quite easy and instructions are readily available on this forum. You can then install a custom ROM afterwards if stock is not your thing.

Found the answer finally!
It's the adb push method. Basically, it's to install adb drivers and execute a few commands via the command window. Not too bad... Don't know much about fastboot yet though ... If anyone else needs more details, please PM me (to save public bandwidth).
Thanks a lot anyways, whpnhp and jocalderone!!!
Trent

[Q] I bricked my GNex, VOL +/- keys don not work

Hi guys !
I believe I just bricked my phone, and I'm looking for some help. Here's the story :
I wanted to upgrade my GNex to AOKP kitkat (latest nightly : aokp_maguro_kitkat_nightly_2013-12-25.zip ).
I wanted to wipe it clean, so I first flashed the latest Google factory images : yakju-jwr66y-factory-09207065.tgz, everything went smoothly.
I then flashed the latest TWRP (openrecovery-twrp-2.6.3.2-maguro.img) via fastboot, still no issue.
I used the MTP mount on windows to transfer the new ROM, kernel and Banks Stadard Gapps.
I flashed them through recovery, in that order:
aokp_maguro_kitkat_nightly_2013-12-25.zip
franco.Kernel-nightly-r394.zip
12-14_GApps_Standard_4.4.2_signed.zip
I did a Factory reset prior to that, but no wipe between flashes I believe.
Now I'm stuck into the boot animation, which goes on forever (basically until the battery dies)
NOW : The thing is, I can't simply boot into bootloader; MY HARDWARE VOLUME KEYS ARE BOTH BROKEN !
During the boot process, The device is recognized by the computer (plug in/out sound), I can see the device with adb, but it's marked as "off line" when I try to reboot into recovery or bootloader.
When the phone was switched off but plugged onto the computer, it was detected as "OMAP 4440", and the drivers could not be installed. I then downloaded the latest Samsung drivers from this post : http://forum.xda-developers.com/showthread.php?t=961956 , and the phone doesn't do anything when it's plugged in (but switched off) now...
Does anyone know how to deal with the situation ? The phone seems to not be not quite dead yet, but I can't find a way to reset it.
I can provide any additional information if needed !
Thanks in advance for the help !!

You can try with a USB JTAG (very cheap from ebay) to boot your phone into Download Mode and then flash it with Odin.

Samsung Galaxy Tab 3 7 Kids T2105 T-2105 can't access recovery mode

I have three (3) Samsung Galaxy Tab Kids T2105 tablets. All are running the latest firmware, T2105UEAOE1.
None of them will boot into recovery. The tabs work, they will boot normally, and then will boot into Download mode. But they will not boot into recovery.
* If I hold down Power+VolUp+Home, or Power+VolUp, continuously, the Tab turns on, and then, about 5 seconds later, turns back off.
* If I hold down Power+VolUp+Home, or Power+VolUp, and release them when the Samsung Logo appears, the device boots normally.
* If I hold down Power+VolUp+Home, or Power+VolUp, and release Power when the Samsung Logo appears, and then continue to hold VolUp and/or Home, the device sits on the Samsung Logo for 20 seconds, then the screen goes blank for a second, then the logo comes back on and sits for 20 seconds, then the screen goes blank... and this cycle repeats until I release the buttons, at which point the device boots normally.
I have done factory resets (through the normal mode settings menus). I have reflashed the latest firmware with Odin3. Nothing seems to fix this problem.
I've been searching the net for hours for this. I see a number of other people who have reported this problem. But nobody has offered a solution. One person stated that he uses "adb reboot recovery" - which is a fine, if ugly, hack - but the fact remains that, for many people, apparently, Stock Android Recovery is not accessible from the Samsung Galaxy Tab Kids T2105.
Does anyone know of an actual solution for this, to restore recovery functionality to this tablet?

Hello,
I have the same tablet, same problem (no stock recovery). None of the button combinations work, and the logo just keeps repeating. My situations is that my 9 yr old daughter locked herself out and can't remember her lock screen password. It's a totally stock tablet (never been rooted or flashed). Because I can't get into the tablet, I'm not sure what firmware version it has, and it does not have USB debugging enabled.
I tried booting into the stock recovery to do a factory reset (since we can't do it in the Settings). I tried flashing the same firmware you mentioned using Odin. It goes through the motions successfully and reboots. But it boots back to the lock screen and its still "locked" (we still see her personal wall paper) - which tells me the flash is not taking. Even though my Odin set up is fine, it does not work (even though everything passed with green lights). I tried going into Safe Mode to try bypassing the lock screen, but even in Safe Mode it still asks for the password. My thinking was to go into Settings and initiate a new password or do a factory reset.
(BTW - the Safe Mode button combination was different for me. Holding Power + Volume Up did not work. Instead I had to hold Power + Volume Up & Down until the logo showed up. Once the logo disapeared, then I had to let go of the Power button only - but continue holding the Volume Up & Down until it fully booted into Safe Mode).
I tried ADB in order to use a password reset/erase command line. But because the USB debugging is not enabled, ADB doesn't see the tablet. There is no other way to enable it via Odin or ADB. And I can't even sideload any Lock Screen Hack apps becuase the table is not rooted, or not USB debugging enabled, or can't get into recovery to flash an .apk or image.
So I am stuck. Why would Samsung block recovery mode??? I have been trying for more than 8 hours. If anyone can help, me and my 9 yr old daughter will greatly appreciate it. My last attempt will be to try Google Device Manager and see if it can somehow unlocks it. Or try Kies (although everything I have read so far says that these have not worked either).
HELPPPPPPPPPP!!!!!!!
ggee

wfire said:
I have three (3) Samsung Galaxy Tab Kids T2105 tablets. All are running the latest firmware, T2105UEAOE1.
Does anyone know of an actual solution for this, to restore recovery functionality to this tablet?
Click to expand...
Click to collapse
Hello,
I'm not sure which one of these did the trick for me, but I was able to get into recovery mode. I'm not sure if your three tables are rooted or not, but I don't think it matters. Try these two methods:
Method #1:
Technically, I think I just stumbled on to this one after successfully completing Method #2 (below). But it's worth trying it first before moving on to Method #2.
-Hold the Home + Volume Up + Power buttons together at the same time (just like the normal process).
-Now, you will probably need to try this next step a couple of time before you get it right. This is because it happens pretty fast and you need to time it perfectly.
-Notice that when the screen turns on, the actual first thing that happens is that the the screen backlight turns on and glows first. This happens first and a split second later the first Samsung logo flashes.
-You need to let go of all three buttons at the same time as soon as you see the backlight turn on, but before the Samsung logo flashes.
This is the sweet spot, and it happens pretty fast. But once you do it at the right time, the tablet will go black again and then the recovey mode will show up. It works for me every time.
Method #2:
I thought somehow the recovey mode portion of the firmware had become corrupter somehow. So I decided to flash a custom recovery using Odin (since at that time I hadn't stumbled onto Method #1 yet). Make sure to use gr8nole's custom recovery version for the SM-T210 and SM-T210R (these are the equivalent wifi versions of our Kids tablet). His versions have fixed some known bugs that CWM/TWRP have with the wifi version of our tablets. Make sure to download and flash the CWM or TWRP .tar file for Odin (I personally have always liked CWM over TWRP).
Here is his link: http://gr8nole.blogspot.com/
Also mentioned here: http://forum.xda-developers.com/showthread.php?t=2437219
-Make sure you have all the correct USB drivers for the tablet installed on your computer.
-Open Odin and load the .tar file that you downloaded from gr8nole into the PDA or AP slot (depending on your Odin version).
-Let Odin check the m5d verification for successful authorization.
-Once Odin is ready, then boot the tablet into Download Mode (Home + Volume Down + Power button)
-Connect the table to a USB cable that is attached to your computer's main USB port.
-Odin should now recognize that the table it connected to a valid COM port.
-Click <Start> button on Odin and it should flash the costum recovey .tar file pretty quickly.
-The tablet will simultaneously flash a progress bar and start to automatically reboot (also pretty quickly).
-Disconnect the tablet from the USB cable now.
If the tablet does not automatically reboot to the new custom recovery screen, then just power off the tablet completely. Wait 30 seconds, and then boot the table to recovery mode use the Method #1 shown above. You should now be able to go into the new custom recovery mode you flashed with Odin (CMW or TWRP). It should all work now.
From this point you can download and install SuperSU to add root (if you want to).
Let me know if this works for you.
ggee

[Q]E988 bricked

I have bricked lg e988 indonesia firmware rooted,updated to kitkat 4.4.2,cwm 6.4.0.4
Due to some issue I factory reset from settg menu and the phone rebooted to cwm recvry mode
I tried to rebootd to system but fail
I tried to flash stock rom via adb sideload but fail too so does with lg flash tool
So I thght smtg wth cwm then I tried to flash twrp loki 2.6 and then stuck to lg logo only until now
Pls help

You're still soft bricked, just force your device into download mode and use LG Flash Tool to return back to stock and start again.

ShadySquirrel said:
You're still soft bricked, just force your device into download mode and use LG Flash Tool to return back to stock and start again.
Click to expand...
Click to collapse
Thank you for the respond. Mind if you share me on how to force my device into download mode?
I have tried the power + volume keys combination but nothing happened, back and stop at lg logo
Before i flash the twrp, i tried the LG Flash Tool, but i wont recognize the phone, something like usb connection issue

hotmatua.parulian said:
Thank you for the respond. Mind if you share me on how to force my device into download mode?
I have tried the power + volume keys combination but nothing happened, back and stop at lg logo
Before i flash the twrp, i tried the LG Flash Tool, but i wont recognize the phone, something like usb connection issue
Click to expand...
Click to collapse
If I remember correctly (please check threads here, it's been a long time since I've used this device, so memories are fading), download mode is activated when you press Volume Up (or both of volume buttons) and insert USB cable. I know that E98x has some strange button sequences, like rebooting to recovery is a two step operation (Volume Up + Power until navbar blinks, then power button twice, that's the only way mine wanted to boot into recovery), so please check around.
As far as USB connection issues, don't use USB3+ ports and if you're on Windows 8.1+ and later, run with Administrator privileges. I never experienced that one (used LGFlashTools from inside VirtualBox running Win XP for all my needs, I'm not a Windows user), so can't really help much but forums are full with explanations how.

ShadySquirrel said:
If I remember correctly (please check threads here, it's been a long time since I've used this device, so memories are fading), download mode is activated when you press Volume Up (or both of volume buttons) and insert USB cable. I know that E98x has some strange button sequences, like rebooting to recovery is a two step operation (Volume Up + Power until navbar blinks, then power button twice, that's the only way mine wanted to boot into recovery), so please check around.
As far as USB connection issues, don't use USB3+ ports and if you're on Windows 8.1+ and later, run with Administrator privileges. I never experienced that one (used LGFlashTools from inside VirtualBox running Win XP for all my needs, I'm not a Windows user), so can't really help much but forums are full with explanations how.
Click to expand...
Click to collapse
Thank you very much...now the phone is back to initial state. This what i've done:
1. Download LG Flash tool from http://lgflashtool.com/
2. Download LG USB Drivers from http://lgflashtool.com/
3. Install LG flash tool and LG USB Drivers
4. Plug usb cable to phone
5. Hold volume buttons and then plug the usb cable to PC (i use win 10)
6. Voila, the Download Mode icon is showed up
7. Run LG Flash Tool (Administrator privilege) & follow the instruction (i use e988 v20c stock firmware)
8. Phone back to normal (only if you use the correct stock firmware)
A very big thanks to ShadySquirrel
Hopefully this thread can also be used as reference for anyone who has the same issue as i had

Using Download Mode Without Display

I've got a Samsung Galaxy Tab S 8.4" which no longer has a working display. I want to back up as much of it as I can, so I've set to work on installing TWRP. I already installed and used it successfully on an identical device (but with the screen working!), but this time round, it just doesn't work.
TL;DR: My questions: Is there any way to add TWRP to my device without using Download Mode? Is there any way to check if TWRP is installed? And is there any way to, once I'm in Download Mode, determine that without exiting and without a display?
My process: I've tried getting into Download Mode both by shutting down, then holding the power, volume down, and home buttons for ten or so seconds, then following up with a volume up press to confirm that I want to use download mode; and by just typing reboot download in adb. I've then used Odin to flash it with TWRP. Odin shows a PASS, so I wait for the tablet to reboot into the normal mode.
Once there, I've tried to get into TWRP by both shutting down, then holding the power, volume up, and home buttons for ten or so seconds; and by just typing reboot recovery in adb. But, no matter how long I wait, my device never reconnects to my computer, and adb shell can't connect to it.
When I've rebooted into recovery, I seem to be able to press the power button once, and it reboots into the normal boot mode; this indicates to me that it's in the normal Recovery Mode, since this isn't default TWRP behaviour. That would mean that TWRP hasn't been successfully installed.
I came across this thread, which suggested that using Odin to flash a device while it's not in Download Mode would likely have no effect. My figuring, then, is that I haven't successfully booted into Download Mode ever.
Interestingly, when I ran Odin during what I thought was Download Mode, it did seem to restart the device when it was done (at least, after a bit I could connect to it normally with adb).
My question, then: Is there any way to add TWRP to my device without using Download Mode? Is there any way to check if TWRP is installed? And is there any way to, once I'm in Download Mode, determine that without exiting and without a display?
I know it's a bit of a tricky one, so :good: if you can think of an answer to any of those.

I wonder if the hdmi adaptors would work in recover, they are quite cheap to buy.

Your issue is likely that you're not manually booting to recovery IMMEDIATELY after flashing with Odin. TWRP is obviously successfully flashing.
You need to disable auto-reboot then when odin states PASS, force manual reboot by holding POWER + HOME + VOL DOWN for a few seconds then change to VOL UP whilst still holding the other buttons.
This is all gonna come down to timing, so you may have to do it several times until you get it.
In any case if all you need to back up is your stuff stored on internal storage, you don't need twrp for that. Just connect the tablet to the PC and use MTP to backup what you need.