Hi, people. I hope you can help me.
My problem is that my rooted Nexus 7 (2012) with 3G and kitkat Stock Android suddenly turned into so called brick state. Only Google logo was appearing during the boot, and that will last forever. Then, just for interest, I tried to enter into the recovery mode (Clockwork Recovery v6.0.4.3 for tilapia), but the device did not go into it. The logo of CWM appeared in the middle of the screen and then the device reboots automatically showing the Google logo screen for several seconds and then going into recovery mode with the CWM logo appearing on the centre of the screen, and then reboot again. This recovery bootloop lasts forever or till the battery runs out. I tried to use
Code:
adb devices
and
Code:
fastboot devices
on my nexus 4, everythings works fine (meaning drivers are installed correclty). But
Code:
fastboot devices
for the nexus 7 outputs into
Code:
- waiting for device -
I tried to force the battery to run out and then tried to go into fastboot, but that did not help, the recovery bootloop appeared on its own again. Please, help me, I don't know what to do.
EDIT. I tried to pull out the battery for a half day (disconnect battery connectors) in hope that this will somehow reset the boot options, but this did not help.
Any thoughts?
Also, if the thread is not in the appropriate branch of the forum, please, let me know, probably at correct location I will find more help. Thanks.
EDIT2. I solved the problem by trying to enter the bootloader mode via adb. But to enter bootloader required a liitle bit of humoristic approach. I was pressing UP then ENTER to enter fastboot mode via termianl (#adb reboot-bootloader) for 5 to 10 minutes. When I managed to enter the fastboot, I flashed TWRP recovery for tilapia and the latest 5.1 Lopllipop But it seems there is a bug in the stock recovery because it does not work with NEXUS 7, the last two updates of Kitkat and Lollipop required to flash custom recovery, because the stock one did the bootloop on either Google logo or the animation of "beautiful" circles.
Thanks for reading, hope this might help someone.
from danik
Hi,
Glad to hear it solved
Good Luck!
Thread Closed.
Related
So, my phone was stuck in No Command bootloop. I’ve done the power+volume up and had cleared cache and even done a factory reset. Those did nothing and my phone is still in stuck No Command loop. I think I’ve made it even worse by trying to Flash Recovery and Reboot options in the Nexus Tool Kit because my phone won’t even get to the No Command screen. It just turns on and turns off after Google comes on. Currently it stuck in that loop and only stops once the battery is completely drained. Also i have tried using power + volume up and it doesn't help . Please help
vigneshkumargv said:
So, my phone was stuck in No Command bootloop. I’ve done the power+volume up and had cleared cache and even done a factory reset. Those did nothing and my phone is still in stuck No Command loop. I think I’ve made it even worse by trying to Flash Recovery and Reboot options in the Nexus Tool Kit because my phone won’t even get to the No Command screen. It just turns on and turns off after Google comes on. Currently it stuck in that loop and only stops once the battery is completely drained. Also i have tried using power + volume up and it doesn't help . Please help
Click to expand...
Click to collapse
As you've upgraded to lollipop ?? You came from a custom rom ?? Enters the bootloader?
vigneshkumargv said:
So, my phone was stuck in No Command bootloop. I’ve done the power+volume up and had cleared cache and even done a factory reset. Those did nothing and my phone is still in stuck No Command loop. I think I’ve made it even worse by trying to Flash Recovery and Reboot options in the Nexus Tool Kit because my phone won’t even get to the No Command screen. It just turns on and turns off after Google comes on. Currently it stuck in that loop and only stops once the battery is completely drained. Also i have tried using power + volume up and it doesn't help . Please help
Click to expand...
Click to collapse
with wugfresh nexus root toolkit click on the button "soft-bricked"(flash stock + unroot) or something like that to restore the phone. After that try another time to unlock and root with a custom recovery (for example twrp).
When nexus root toolkit installing the original lollipop rom, look the "dos window" to see if the software shows errors, because sometimes the process ends without a real restore.
If you have other problems, please post a screenshot.
Fenix46 said:
As you've upgraded to lollipop ?? You came from a custom rom ?? Enters the bootloader?
Click to expand...
Click to collapse
Yes I was using a custom rom, but I not even reached the step where a was supposed to use the rom, I was steel still cleaning the divece.
Here is a photo from the screen I'm stuck in:
eeee.... I'll find a wint to send the photo to this forum ^^" wait
I have looked at multiple guides on this and other sites, googled and tried stuff and I cannot resolve this problem. Hopefully I am posting in the right place.
I took the jump and unlocked the bootloader on my Moto G first generation, XT1034 successfully. I flashed TWRP 2.8.60.xt1034.zip with adb and this was successful. Then I flashed Super SU 4.6 Update and that was successful. I got into trouble I guess when I tried to flash Cyanogenmod 12.1 nightly. I used TWRP to flash via install. The flash had an error, which unfortunately I didn't write down. I believe it was something to do with a partition. However, it looked like the flash failed. At this point and for hours I have been trying to fix the "Warning Bootloader Unlocked Loop I am stuck in.
I have been able to get into the phone and flash via adb commands. I've tried several commands suggest to fix this that I have found in forums. I have tried flashing several recoveries including an older TWRP per the method in this thread, a clockworkmod - and the original 2.8.6.0.xt1034. When I get into the phone bootloader which is available, I have not been able to access any options in recovery. Pushing the power button on recovery leads to a blank screen sometimes followed by a recovery starting or a Motorola Logo starting up and a couple times a recovery. TWRP has started a couple times, but never gets past the intro screen, where it locks up. clockworkmod (clockworkmod-6.0.4.7-falcon.img started once after flashing through adb and gave me flash options. I tried to sideload, didn't understand, went back and the recovery locked up. These recoveries no longer load at all.
Through all of this the "Warning Bootloader Unlocked" logo screen comes up after plugging into the computer (Windows 8.1).
Example, I open the phone bootloader by waiting for the phone screen to go from the "Warning Bootloader Unlocked" screen to blank - it cycles from logo to blank. If I'm quick the phone and hard boot the phone will boot into bootloader. I connect to the laptop through USB. When I toggle to recovery and hit the power button the screen goes blank, the Motorola Logo pops up, goes blank and then the "Warning Bootloader Unlocked" appears. The Laptop then seems to connect and disconnect as the Warning screen comes on and turns off.
The factory selection just goes to a blank screen.
I would really appreciate some advice on how to get the phone back to a state in which I can work with it and try again. It is very difficult wading through all of the information out there. I've learned a lot through this issue, but can't take it any further.
Thanks, Jeff
Solved - Stuck in "Warning Bootloader Is Unlocked" Loop
This resolution took many hours to figure out, but I finally got there with this guide - http://forum.xda-developers.com/showthread.php?t=2542219, this thread - http://forum.xda-developers.com/showthread.php?p=54855457#post54855457 and this thread - http://forum.xda-developers.com/gen...e-firmware-t3042687/post59139823#post59139823.
I tried RSD Lite on different computers and USB cables I could not get the device recognized. So I ended up with the MfastbootV2 method to reload stock firmware, which I found on the firmware thread above - this was big, as my phone is with Wind Mobile in Canada and the link is the right one. The only thing I picked up from a different website was to use a computer with USB 2 ports. This is what I did, but I don't know one way or the other if USB 2 was needed. .
Can't thank you hard working guys enough for the time you take to put these threads together. I'm back up and running. As a bonus, after a big clean up in the process, my phone is running fast again.
Thanks everyone.
So today after a doctors appointment i checked my phone to see the time. when i got home my phone was stuck in the google screen. i waited for about one hour as i had to go some place else. when i came home the phone was still in the google screen. at this point i could still go in to recovery mode. i searched a bit on the internet and then flash+unroot from the nexus toolkit from the stock 5.0.1 that i had to the stock 5.1.1 . it still didn't open. i searched some more and I found that i needed to enter recovery mode and wipe everything off. i tried making a backup with the toolkit but it didn't work. then i tried going to recovery mode and it also didn't work. next i tried to flash a 4.4.4 version as i saw it worked from someone but it is stuck at the point "waiting for device" .
i don't know what to do. please help me fast , i need to leave town in 4 days and i don't have time to take it to service and i don't have a back up phone either.
your help would be much appreciated
edit: when i try to enter recovery now the phone shuts completely down
edit2: my nexus toolkit apparently didn't flash properly so atm i have no os on my phone. (it is confimed by a twrp recovey i booted with the nexus toolkit) i am currently struggling to find out how to install and os without recovery mode or toolkit, help would be appreciated
edit 3 : if anyone is reading this, i manage to boot a recovery image but it only shows an android robot with a red exclamation mark, i cant use adb commands, it says device not found, still don't know what to do
if i try to install os with a flash-all.bat it says failed remote flash write failure, same as with the nexus toolkit
if i try to wipe cache from the trwp recovery it says taht i cant mount any partition so i think my memory drive is busted
Hello, thank you for using XDA Assist.
Try asking for help HERE and the Nexus 5 experts will help you there.
My guess is that you need to unlock the bootloader to use the flashall.bat
Have Fun!
Hi guys, today I tried to install the nightly cm-13.0-20160301-NIGHTLY-hammerhead.zip of Cyanogenmod 13 for my nexus 5 (OTA update). I downloaded it and I have rebooted my phone for finishing installation. It didn't reboot in recovery, but there was a black screen (the lcd screen was turned on). I didn't touch my phone for about 15 min. to see what happen. I decided to reboot my phone because was stuck here, but there was the google logo (yes, it appears), and then the black screen. I can go to bootloader mode, but not in recovery mode (black screen in this mode). Adb isn't working (I have the last version from the SDK, and it always worked for me): if I am in bootloader mode my pc don't see my nexus 5. If I try to boot in "black screen mode" my pc see it but says unauthorized (before the brick debug mode was enabled). If I connect my phone to a power source, for one second show me the start of the "battery animation", then boot "normally".
I can't go to recovery; I can't reset from external or re-install the recovery. What can I do????
Thanks in advance..
Sorry for my bad english
Hi,
Try posting your question here:
Nexus 5 Q&A, Help & Troubleshooting
The experts there may be able to help.
Good luck!
I solved
I solved by installing the adb and fastboot naked drivers andò flashing the factory image. Thank you anyway.
Hi all,
I have a Nexus 5 that I bought second hand. It powers up but is stuck in a bootloop. The Google Logo appears and it starts to load but it does not progress. I can get in to boot loader and I have tried to do a factory reset but it it still stays in the boot loop. I have tried to install the new factory software using the Nexus Root Toolkit but nothing. The Phone is also locked and I cant unlock the phone so the Nexus Root Toolkit wont allow me to try to flash the stock image? I am at the end of my knowledge base as I have tried almost all the normal methods to unbrick and fix the boot loop. The Phone can access the boot loader. When I try to unlock the phone using the Nexus Root Toolkit, it unlocks it but does not write the data and it becomes unresponsive! I have no idea if USB developer is on in settings as I have never got in to the Android operating system as I cant get past the bootloop.
Your help and suggestions would be most helpful as I am now at an end of my abilities until I am further educated about how to resolve the issue.
Res
I haven't tried this myself (no need), but since you seem to have nothing to lose give it a go. It's official Google, and comes with instructions.
https://developers.google.com/android/nexus/ota#instructions
Does the fastboot oem unlock command work?
Do you have all the correct usb and adb drivers installed??
First off, I suggest doing some reading up on adb and fastboot. Then manually flash factory images first and try to boot the phone completely.
The links @dahawthorne will help a lot.
Then try the command that @audit13 mentioned.