Develop Bugs

Nexus 7 2013 model, bootloop after battery dead

Completely stock 4.4.4 unrooted
Had recently switched to ART a week earlier
Boneheaded move, let battery die, will not get past Google logo
I seem to be able to get into recovery with a few tries, have ADB, forget why I had it
Would it be better to flash stock or unlock, root, and throw a custom ROM on it?
Welp, might be dead, can't get ADB to recognize it, suggestions? And yes, battery is fully charged

Try wipe dalvik , cache, system in recovery and flash a custom rom
. If that doesn't help then you need to go back to stock. Have you tried in bootloader, doing the driver steps in Nexus Root Toolkit (Windows PC) ? I had a boot loop and fully using all the steps with the drivers and everything else, I went back to stock and rooted it using Towel Root and flashed latest twrp recovery using Rashr from google play Store (with towel root and rashr you don't need a PC to root and install a custom rom)

idCyber said:
Try wipe dalvik , cache, system in recovery and flash a custom rom
. If that doesn't help then you need to go back to stock. Have you tried in bootloader, doing the driver steps in Nexus Root Toolkit (Windows PC) ? I had a boot loop and fully using all the steps with the drivers and everything else, I went back to stock and rooted it using Towel Root and flashed latest twrp recovery using Rashr from google play Store (with towel root and rashr you don't need a PC to root and install a custom rom)
Click to expand...
Click to collapse
I'll give that a shot this weekend

Bootloop after downgrade from L Preview..

Hey, I have an issue with my tablet after I wanted to go back to kitkat from the L Preview.
I had 4.4.4 and decided I'd like to try out the L preview
So I downloaded the img from Google and flashed it via fastboot, worked perfectly fine but not as stable in apps as it was on kk.
So, I downloaded the latest factory image from the Google Developer Site, extracted it and ran the flash_all.bat
Seemed to flash ok, no errors, rebooted and started to boot but it only goes as far as the spinning boot logo. No further.
After leaving it a good hour or so I decided it clearly wasn't going to boot I went back into the bootloader and tried to get into stock recovery mode but after rebooting it just stays at the white Google logo..
So, I tried to flash TWRP via fastboot. Again no errors, successful flashed but just like before it sticks at the Google logo and never boots the recovery..
I even tried the "fastboot boot recovery.img" but then it just freezes on the bootloader.
I've also tried the 4.4.3 img.. same happens.
Now if I reflash the L Preview img via fastboot it sticks at the Google logo and didn't even reach the boot logo!
Sounds to me like the partitions have gotten corrupt? Though the imgs are flashing successfully without error so I don't think it's that..
But.. recovery partition is broken as I can't get into recovery at all, and it freezes if I try.
Anyone any idea what could have happened?
All I did was flash the KK factory image over L, just like I flashed L over KK and it worked fine.
All the guides online do the same thing to downgrade L to KK.
Is it bricked? Can it be recovered?
I still have bootloader access with fastboot..
Any help is greatly appreciated!

I finally managed to enter the stock recovery and it appears that the /cache partition was damaged or corrupt. Strangely it would get corrupted each time I flashed the factory image, even flashing the cache.img directly..
However it seems to have fixed by doing a factory reset and /cache then formats correctly and android booted fine after this :victory::laugh:
As you see in the image, when entering recovery I was presented with a bunch of errors regarding the cache.
Tried to wipe cache but that fails.
Did a factory reset and cache seemed to format fine.
Did another wipe cache and this time it completes without the error I got before.
Then rebooted, Android began booting and thankfully it's now working fine again!

[Q] Helping with bootloop

Hi guys! I have a problem. I had paranoid android as rom and it worked great! Some days ago while i was using Facebook app there was an overloading of memory (i think) and there was the reset of the Nexus. From that moment the cellphone is in bootloop. I can access in the recovery (CWM). I tried some methods:
1)in recovery mode i tried to wipe everything but nothing
2) i used nexus root toolkit but nothing... also enabling the option softbrick/bootloop
3)using gnex toolkit... the same
4)using Odin too but nothing to do
What can i do ??
Thanks
PS: all these methods that i tried seem to work but when i turn on the phone it is always in bootloop -.-

try flashing the system in recovery or in fastboot mode?

vaanus said:
try flashing the system in recovery or in fastboot mode?
Click to expand...
Click to collapse
I tried both without good results i think it is bricked...

Same problem here
Am facing the same problem here.
Was on cm11 and one fine day without any issues got into a boot loop. My phone is encrypted, so during boot, it asks the password and even logs into the phone, but within 5 seconds, it goes into a reboot.
Tried almost everything i could find.
erasing/formatting from fastboot - shows success but logs into cm11 again with bootloop
Trying to flash stock - everything shows success but still back to cm11 when rebooted
trying to format mke2fs -t ext4 /dev/block/mmcblk0p12 from recovery- still nothing
flashing through odin - no change.
The crazy part is, everywhere it shows success and when it finally boots system, its booting cm11 and asks for password to decrypt data. And after booting goes into a reboot.
The only place i see any failure is when trying to format /data from twrp. It says its not able to mount the partition.
Any pointers anybody? Can't think of anything else which i can do to fix this issue. :crying:

I had same probleme after install lollilop rom:
[ROM][5.0.1/LRX22C][AOSP] AOSP Lollipop: a wee better than stock.
1 day use and bootloops, everything i do seems ok but it always bootloop without changes !!!
1)in recovery mode i tried to wipe everything but nothing
2) i used nexus root toolkit but nothing... also enabling the option softbrick/bootloop
3)using gnex toolkit... the same
4)using Odin too but nothing to do
If anyone get a solution ?

I had same probleme
I had same probleme after install lollilop rom FML-AOSP-5.0-20141207 Recovery: CWM V6.0.5.1
I've tried everything from wiping erasing and reflashing & reflashing data, wiping cache, davlik cache, system, internal storage. I did the factory reset in CWM recovery to wugfresh toolkit's "flash stock+unroot" with odin mode All finished successfully according to fastboot , recovery , odin but a reboot showed the system in the same state as before.

Unable to Reset - Strange behavior

Hi everyone,
yesterday my beloved galaxy nexus started rebooting continuously. I did not even touched it. The loop is continuing still now without any reason. Usually, in this occasions, I've performed a clean/hard reset (I don't know the correct term), wiping system, data, cache and dalvik partitions, flashing a new rom and bla bla..
The very strage thing today is that I'm not able to do that. I'm using the TWRP custom recovery: if I wipe something or perform a factory reset (standard in twrp) it starts the process, gives me at the end the advice that everything has gone well, it even allows me to flash a new custom rom and gapps but when I reboot, nothing has changed. It reboots in the previous system, nothing erased and again with the reboot loop.
I've just tried also using fastboot interface. Any command I launched performed its task, the phone gives a positive ending but when I reboot again, it's like nothing happened.
Specs: Galaxy Nexus Maguro, GSM version. Actually running a 4.4.4 rom (SlimKat) with its own kernel. A lot of customization (writing/formatting) in the past 2 years.
Thanks in advance for your help!

Did you try CWM recovery?
you can install it using flashify from Google Play...

devil_tear said:
Did you try CWM recovery?
you can install it using flashify from Google Play...
Click to expand...
Click to collapse
My phone reboots in 10 sec after he boots. I can not install flashify and not even flash cwm recovery.

The same here
I'm having the same problem here, it seems that It's not saving any change I try to make, as you've described it says that every task was performed ok but after rebooting it has all my apks, data etc. even afer wiping.
The only thing I can make to keep it ON, is to enter in SAFE MODE, then I can save my pictures and data but I can't flash anything (well I can but it make no change).
FACTS:
-If you start the phone and you activate USB debugging, after rebooting it's not active anymore
-It shutsdown after 10 secons entering in a boot loop (unless you use SAFE MODE, that way you can keep it on)
-If you wipe data, wipe cache, flash boot, flash bootloader, flash system, unlock boot loader, root it, restore, flash stock + unroot (using nexus root toolkit v2.0.5) or use any flash option of fastboot via command line including update, you will get task perfomed ok but nothing is changing; after rebooting It shutsdown after 10 secons entering in a boot loop and all my data including APKs, pictures etc are still in the device.
-You can boot in Download mode, Recovery mode
Phone spec.:
Galaxy Nexus GSM/HSPA+
Android 4.3.0 JWR66Y
Product name: Tuna
Variant: Maguro 16GB
Bootloader Version: PRIMEMD04
Base Band Version: I9250XXLJ1
Lock State - Locked (You can easily unlock it but after reboot it'll be locked again)

Bootlooping Nexus 6

Several months ago I rooted by Nexus 6 XT1103 with Nexus Root Toolkit V2.1.5. I just tried to unroot my unlocked phone but it is now caught in a bootloop.
I followed the Full Driver Installation Guide – Automatic + Manual setup and had a successful Full Driver Test. My attempt to unroot my phone I used Flash Stock + Unroot, Device is on/Normal. I selected my build, MMB29K, did Automatic download in No Wipe Mode. Once the download was complete my phone restarted and was stuck in bootlooping. NRT timed out after 20 minutes. I followed the Bootlooping fix instructions and did wipe data/factory reset to no avail. Next I re-attempted Flash Stock + Unroot Soft-Bricked/Bootloop. I re-download the MMB29K build in case I download the wrong package previously but this time I did not use No Wipe Mode. Same result. I have redone this process several times with no success. I even wiped the cache partition.
I’m not sure where to go from here. Can I flash an earlier build than is currently installed on my phone?