Database Users

Nexus 7 Automatic Freeze and Reboot Loop

Couldn't find a similar thread so I thought i'd post my problem.
Beginning last night, after watching a video using Pulse I realized the sound wasn't working. I restarted the Nexus 7, had the sound working again, but the device froze during the video (in pulse), and then reset on its own.
Since then, the Nexus 7 will reboot, then once on, will freeze after 30 seconds - 2 minutes, reboot again, and just loop in that pattern. Sometimes when it turns out, I'm not even able to unlock it before it reboots again.
Even if I turn off the Nexus 7 when I get the chance, it will turn on itself and continue the freeze -> reboot loop.
Right now I've been letting the loop continue until the battery runs out to see if it fixes the problem. Until then, has anyone else faced this issue? Any solution?
Details: An unrooted Nexus 7, few apps, only thing off market was to enable flash, got the device 2 weeks ago

Bump to see if anyone has a solution.
Will post a video of what happens when I get home from work.

Haven't heard of this before.... what happens if you boot into bootloader? Perhaps you just need to do a full wipe and re-install.

It actually freezes on bootload.
When I do a force turn off (power and volume down), it will turn off, then turn on by itself and continue the bootloop
Will try to upload a video of what is happening soon.

I have the exact same issue.
Can't restore or reflash because it won't go into bootloader\recovery.
What it WILL do is reboot incessantly. SUffice it to say I'm pretty pissed. This just happened suddenly.
I had not rebooted in a few days so I rebooted, and now it won't stop.
The only change I have made is I disable the magazine app because I read that it's a battery hog and I just do not use it. I can;t imagine disabling the magazine app would result in a full on boot loop where even recovery fails...
-M

I would reflash recovery while in the boot loader through adb. That is what fixed my similar problem

kevlars9 said:
I would reflash recovery while in the boot loader through adb. That is what fixed my similar problem
Click to expand...
Click to collapse
I have the same kind of issue. Left to itself the device reboots until the 'Google' display every 1 minute or so. When trying to get into bootloader it freezes when the Android on its back shows up....
So it seems no flashing is possible. BTW this happened when I tried to uninstall an app, similar scenario to some others reporting this type of problem.
I guess the next stop is the Chocolate Factory helpline :/

I contacted the Googleplex helpline at 6 am Pacific time and Anthony kindly promised a replacement unit for next week... No tech explanation or other info was revealed. Purchase from Google Play in the UK.

Finally given a solution, though a very annoying one.
Basically, since you have about 30 seconds - 2 minutes everytime it loads up, I was just told to try and see if I can factory reset from settings within that time frame. Took a 3 attempts (sometimes it would reboot while loading), but eventually got the factory reset going. Luckily I've only had this thing for less than 2 weeks and didn't have much stuff needed to back up.

Right on, glad to hear you got it sorted - in my case. though, this solution would not have worked, as mine never booted all the way through but got stuck at the boot logo (just in case others are reading this with similar problems). So it sems there are at least 2, possibly more, problem scenarios of this type.
My replacement unit from Google Play just arrived - impressed by the speed of proceedings (inside 2 working days from reporting to receiving in Scottish Highlands). Let's see how this one pans out...

HEy problem plss help Boot loop on N7
Hey my nxus wint get out of a boot loop and i cant get in to recovery mode by bootloader this have ben going on for some time and it started when i flashed a new rom ( Paranoide android )on my Nexus 7:fingers-crossed:

Eternal 2013 Nexus 7 reboot loop
Last night my Nexus 7 2013 started going into a reboot loop and would not stop no matter what efforts I made to stop it.
It started when the Billguard application tried to apply an update. The update gets halfway and then forces the tablet to reboot every 30 seconds. I tried disabling the Wi-Fi to stop the update from happening. I even disabled automatic updates and the reboot still happens restoring the tablet to its previous state. I even tried uninstalling the application which appeared to be successful but then immediately rebooted the tablet to the previous state.
After calling Google tech support and only receiving minimal efforts to stop the tablet from rebooting. All efforts were unsuccessful. I even tried uninstalling the application which then instantly rebooted the Nexus seven and attempted the update agaian forcing it back into the reboot loop.
I then tried to do an android device manager erase which was not acknowledged or completed even when my Nexus 7 goes online.
Any help would be appreciated.
Thanks,

I have a very similar problem. However, it began from no changes to my system. I am on Legolas' All-F2FS Recovery and the SlimKat F2FS system. At first I got stuck in a boot loop, and could get into fastboot, but cannot boot back to the custom recovery. Now, I get past the bootloop but cannot get past the loading screen, and still cannot get into recovery. I've tried wiping cache, I've tried reloading the recovery via fastboot -- but since all I have is fastboot access, I don't know what else to do. All my partitions are F2FS, so I am afraid to try moving back to any standard ext4 recovery. I am very interested in this thread, as I feel our issues are related. Keep me updated, and I will do the same if I find anything useful.
Any help I suspect is appreciated by more than just myself.
BTW, removing back and leaving battery unplugged for a while (which had helped with other bootloop issues) did not fix this one, nor did the cold boot from fastboot with usb plugged in to boot recovery.

superdave132 said:
Last night my Nexus 7 2013 started going into a reboot loop and would not stop no matter what efforts I made to stop it.
It started when the Billguard application tried to apply an update. The update gets halfway and then forces the tablet to reboot every 30 seconds. I tried disabling the Wi-Fi to stop the update from happening. I even disabled automatic updates and the reboot still happens restoring the tablet to its previous state. I even tried uninstalling the application which appeared to be successful but then immediately rebooted the tablet to the previous state.
After calling Google tech support and only receiving minimal efforts to stop the tablet from rebooting. All efforts were unsuccessful. I even tried uninstalling the application which then instantly rebooted the Nexus seven and attempted the update agaian forcing it back into the reboot loop.
I then tried to do an android device manager erase which was not acknowledged or completed even when my Nexus 7 goes online.
Any help would be appreciated.
Thanks,
Click to expand...
Click to collapse
I found a fix that worked for me!
I have Minimal ADB & Fastboot installed on my computer. If you're comfortable with the idea of connecting to your Nexus when it is in bootloader download (Fastboot mode), you can try this.
First, I downloaded a full reset file from https://developers.google.com/android/nexus/images:
The ones you'll want are either:
this one for 4.4.2
this one for 4.4.4
I unzipped the appropriate one directly into my ADB directory, and then executed the "flash-all" script by literally typing in "flash all" into the prompt.
This installed all of the default bootloader, recovery and system back onto my Nexus 7 (btw two names for the nexus are "Grouper" and "nakasi"). Then, I was able to clean boot into a reset Nexus 7 system. It was still unlocked. From there, I was able to reinstall a custom recovery (I went with TMW), and even reinstalled a custom ROM (I always stick with SlimKat, personally).
Note: You should also wipe data from the custom recovery once you've installed it.
Second note: In order to be able to load this stuff, I believe you have to unlock your system
To unlock your system in fastboot: fastboot oem unlock
I sincerely hope this helps you (and anyone else stuck in a similar situation to where I found myself). I had completely set my system up with F2FS, and now I'm back to EXT4. BUT, I have a custom recovery, custom rom and root access. Can't complain.:highfive:

Stuck in BootLoop and Factory Wiping doesn't actually wipe anything

Nexus 7 (2012)
4.4.4 Stock
KTU84P
HW Version - ER3
Bootloader Version - 4.23
Locked Bootloader
Not Rooted
I have a Nexus 7 sitting in front of me that was dropped off by my aunt in hopes that I could repair it for her. It doesn't look too promising, but I thought I'd consult the mighty fine people here on XDA before I give her the bad news. Here's what she says happened. Yesterday, while preforming day to day activities on it (browsing internet, Skyping, Facebook, etc), the device completely froze. After holding down the Power Button and forcing it to shutdown, she booted it back up. Everything seemed to functioned properly for about 30s - 1min when, at that time, the device turned off and rebooted on its own. After booting back up, it started to repeat this cycle. Basically getting stuck in a bootloop. I personally have never witnessed a bootloop like this before, where the device successfully boots up completely into the OS before turning off and repeating. I'm more used to dealing with ones where it might go as far as the manufacturer logo and then repeats. So anway, as I stated, I only have a 30s - 1min window where I can make changes in order to troubleshoot. The first thing I figured I should do was to go into "About Device", turn Developer Mode on and get USB Debugging enabled. I was able to do this and used "adb devices" to confirm its connection to my computer before it looped again. After its next bootloop I headed back into settings because I wanted to take note of the Android version she was running. As I was navigating there, I noticed that the Developer Options were no longer active. Basically as if I hadn't enabled them yet. This made me start thinking that changes being made on the device weren't sticking. I decided to make a few visual changes to the home screen and see if they were still there after the next bootloop. I uninstalled an app, rearranged icon placement, and changed the wallpaper. Once it shutdown and booted back up again, everything was back to the way it was before the changes had been made. The app I had uninstalled was still there, the wallpaper reverted back, and the icons were back in their original location. At this point I decided to see if I could reboot into Safe Mode. Unfortunately, this doesn't work. I am able to get the reboot to Safe Mode confirmation box and tap "Ok" but it remains in Normal mode when it boots back up. I eventually tried to boot into recovery and preform a Factory Reset. I was able to get into recovery and reset the Nexus. Or so I thought. Instead of seeing a Device Setup screen after it wiped, like I assumed I would, it booted up and still had all the data on it. There were no errors during the wipe and it was confirmed with "Data wipe complete." afterwards.
I am absolutely lost. I've never dealt with such an unusual issue before. Especially with it not even reacting to a complete data wipe. So, just to recap . . . I only have 30s - 1min available to interact with the OS before it reboots itself, any changes made during that time don't stick, Device is successful booting into Stock Recovery, and I can successfully get a Fastboot connection when booting to the Bootloader.
Luckily she has come to terms that this might not get fixed and has decided to go a head an order a newer 2013 model. I'd still like to try any solutions that you all might have. Just in case there is a slight glimmer of hope.
Oh, and one last thing I should mention. I tried to see if I could get the bootloader unlocked but it didn't work. This is the first Nexus I've ever had in my possesion, so I'm not really familiar with the tools available for it. I found WugFresh's Root Toolkit and attempted to Unlock with it. The process seemed to go as it should and I didn't receive any errors on the tablet or in the software. However, in the end, it didn't make any changes to the bootloader.

same problem
I have the same problem as you.
Did you find a solution?
Can anybody help us?
Thanks.

I have a similar problem, but I think mine is related to the bootloader.
I'm stuck on 3.34 and that's where it fails ever time I try Wug's Nexus Tool Kit.
Have you tried Nexus Tool Kit yet?

eawooten said:
I have a similar problem, but I think mine is related to the bootloader.
I'm stuck on 3.34 and that's where it fails ever time I try Wug's Nexus Tool Kit.
Have you tried Nexus Tool Kit yet?
Click to expand...
Click to collapse
I have tried factory reset from recovery, no errors while wiping but when device restarts nothing has happened: I only have a 30s-1min of old system with all my data and apps or directly bootloop.
Also I have tried flash factory images with Nexus Tool Kit and directly from bootloader. No errors while flashing, apparently has flashed new image system. When device restarts nothing has happened: bootloop or my old system with data and apps for 30s before restart.

Myself and a few others are having the same problem... please keep us updated if you find anything out.
http://forum.xda-developers.com/showthread.php?t=2588911

Hard brick? Can't boot to recovery

So I think my Nexus 6P is hard bricked, but I just want to be sure before I issue an RMA.
I was on a plane flying over the Pyrenees and opened the camera to take a picture. The phone froze and started rebooting, which I found strange really strange as it never happened before. Since then, it wasn't able to boot again. The phone is completely stock, running 7.0, apart from the unlocked bootloader that I had unlocked the day I bought it (March/April this year). The phone shows the unlocked bootloader warning, goes to the white Google logo with the padlock below, and then goes back to the unlocked bootloader.
From here I can Power + Vol down and get to bootloader, which I thought would leave me to recover the phone somehow. I know my way around nexus devices so the first thing I tried was scrolling in the bootloader menu and boot into stock recovery. No luck, unlocked bootloader warning, white Google logo and loop. Tried "Factory" in the menu and the same thing happens.
So then I've gained access to a computer and tried downloading a twrp recovery and boot into it. Ran fastboot boot twrp.img, the phone tries to boot again, and the same thing happens. Boot loop. After that, I've downloaded the latest stock Google images and I've run a different set of things, all with no luck. Booting directly from fastboot into stock recovery doesn't work. Flashing stock recovery and trying to enter stock recovery via bootloader menu doesn't work. I've erased and flashed bootloader, radio, and all other partitions (system, boot, recovery, vendor and cache), without any luck. The fastboot commands return "OKAY" but it seems like it's doing nothing.
I am out of ideas, I always thought I would be able to recover a Nexus phone as long as I could reach bootloader mode, but I guess I'm wrong. Should I RMA, or is there anything else I should try?
Thank you.

You say you "Ran fastboot boot twrp.img." Try to do fastboot flash recovery twrp.img from fastboot and see if you can get twrp working. Then try to flash a ROM

vladniko said:
You say you "Ran fastboot boot twrp.img." Try to do fastboot flash recovery twrp.img from fastboot and see if you can get twrp working. Then try to flash a ROM
Click to expand...
Click to collapse
Done both, actually. Tried to boot directly from a fastboot command and then tried flashing the actual recovery image to the phone. No luck in both. Never able to get into twrp.

I had the same thing happening to me. I was also using stock 7.0 with an unlocked bootloader. My screen froze during webbrowsing and had to restart the phone. Once booting up, it never came past the Google logo. Getting into recovery didn't work either, just started looping again. Tried to flash twrp, got in there after many tries. Tried flashing all kind of android versions but nothing helped. After that I decided to just use my warrenty and send the phone to the store. They replaced the motherboard and are now sending it back.

hubhib said:
I had the same thing happening to me. I was also using stock 7.0 with an unlocked bootloader. My screen froze during webbrowsing and had to restart the phone. Once booting up, it never came past the Google logo. Getting into recovery didn't work either, just started looping again. Tried to flash twrp, got in there after many tries. Tried flashing all kind of android versions but nothing helped. After that I decided to just use my warrenty and send the phone to the store. They replaced the motherboard and are now sending it back.
Click to expand...
Click to collapse
Yep, I gave up already. Tried all different sort of thing, and was never able to get into any kind of recovery, let alone Android itself.
Called Google support yesterday evening, a replacement is on its way already.

eddie_gordo said:
Yep, I gave up already. Tried all different sort of thing, and was never able to get into any kind of recovery, let alone Android itself.
Called Google support yesterday evening, a replacement is on its way already.
Click to expand...
Click to collapse
Needed the RMA anyways. If you had an unlocked bootloader and formatted each partition and then flashed each partition with the corresponding image file from the latest factory image, it was shot. It happens from time to time. Happened to mine as well. 2 or 3 days after I finally got it (pre ordered on launch) I rebooted the phone at some point 2 or 3 days later and it just never turned back on. 100% bone stock. Not even an unlocked bootloader. Nothing would happen when I plugged it into a PC, left it on AC power for hours and hours and still nothing. Holding power 10-15 seconds, nada. RMA'd and luckily this one's been perfect ever since. Good luck with the new device!

Nexus 6p bootloop. Wont go past the google screen

Was just using it today morning and it froze up on me... I held the power button and forced shut it down. Then I tried booting it up. It goes to the warning screen (Cause I have unlocked my phone.) Then it takes me to the google white logo screen thing and yeah, just turns off, back to the warning screen then back to the google screen. I was rooted with twrp recovery. Phone wont even boot into recovery, just keeps repeating those steps. I tried using the nexus toolkit as well, to boot into a temporary recovery, no luck. I even used the bricked/wont turn setting. Which just flashed all the stock images into the phone. But same thing, over and over again.
Seems like i have the bootloop death and nothing seems to bring it up. My question is how do I go about contacting google and trying to get a different device? Or something they can help me with? I brought it from amazon (my dad did.) So no idea what to do... Is there a email or a contact no?

bump

xringo said:
Was just using it today morning and it froze up on me... I held the power button and forced shut it down. Then I tried booting it up. It goes to the warning screen (Cause I have unlocked my phone.) Then it takes me to the google white logo screen thing and yeah, just turns off, back to the warning screen then back to the google screen. I was rooted with twrp recovery. Phone wont even boot into recovery, just keeps repeating those steps. I tried using the nexus toolkit as well, to boot into a temporary recovery, no luck. I even used the bricked/wont turn setting. Which just flashed all the stock images into the phone. But same thing, over and over again.
Seems like i have the bootloop death and nothing seems to bring it up. My question is how do I go about contacting google and trying to get a different device? Or something they can help me with? I brought it from amazon (my dad did.) So no idea what to do... Is there a email or a contact no?
Click to expand...
Click to collapse
I have exactly the same problem. I was on O dev preview 3 and today it bootlooped randomly. Now it wont go beyond google screen. Ive tried flashing factory images of N and O preview 3, with and without wiping. Ive also tried relocking the bootloader, relfashing stock recovery and twrp....

NoobInToto said:
I have exactly the same problem. I was on O dev preview 3 and today it bootlooped randomly. Now it wont go beyond google screen. Ive tried flashing factory images of N and O preview 3, with and without wiping. Ive also tried relocking the bootloader, relfashing stock recovery and twrp....
Click to expand...
Click to collapse
Do you get any errors when you fastboot FORMAT sytem, userdata and cache?

NoobInToto said:
I have exactly the same problem. I was on O dev preview 3 and today it bootlooped randomly. Now it wont go beyond google screen. Ive tried flashing factory images of N and O preview 3, with and without wiping. Ive also tried relocking the bootloader, relfashing stock recovery and twrp....
Click to expand...
Click to collapse
Yeah same issue with me. Download a bunch of images and tried flashing it, no luck. Can't even go to any other screen other than the google white logo and bootloader. This sucks, wish I never brought this piece of ****. So much issues with this phone.

v12xke said:
Do you get any errors when you fastboot FORMAT sytem, userdata and cache?
Click to expand...
Click to collapse
No, I did not attempt that. Somehow miraculously, when I was chatting with customer support, the phone booted in after about 2 hours of bootlooping. However, I had wiped it by then. I read somewhere about allowing the bootlooping phone to bootloop for sometime. Then it would get in and we would have to change some kernel settings related to the big CPU cores.
I did no such thing , however, I do not know when the problem will reoccur.

Also had the bootloop when flashing N2G48B. Flashed N2G47W and now boots again.

Nexus 10 boot stuck on google logo... bootloader ok, but recovery does same thing.

I replaced my GNEX10 battery last january. Aside from the battery calibration being off... (which eventually corrected itself!) it's been working fine. As of late it had rebooted itself while I was using it a few times. A few days ago, it had enough battery such that I left it on overnight. I picked it up the next morning and the notification lamp was flashing so I knew it was still on. I tried to wake it up without success. Usually a quick tap on the power button should do it. Nothing. So I rebooted... and on the google logo it stuck. I knew that a factory reset was probably in order since I didn't do it when I replaced the batter... I got it into the recovery screen... but I could not get the menu. I likely didn't press the right volume rocker. Then I tried again... booted to the bootloader, and selected recovery. This time, and since, only the google logo comes up. No andy on his back with "no command". It just tries to boot into something. I can't do a factory reset this way.
I tried the Nexus Root Toolkit. I can only get it to recognize the device if it's in the bootloader... when I try to use it to boot to recovery, same thing and the NRT says waiting for device... and gets no further. I tried to use it to flash (stock?) recovery but the N10 just sits there on the twrp logo screen and nothing more after temporarily booting into twrp. Just keeps saying "waiting for device"
Anyone have any suggestions! Getting seriously bummed!
So one more data point... I manually rebooted into the bootloader after trying to flash the stock recovery using the NRT. Then it appeared to flash the recovery image.... here is the bit of the log where it ended up:
Checking Fastboot Connectivity
fastboot devices
R32CB04GHGT fastboot
+ Fastboot Device Connected
Flashing Stock Recovery to RECOVERY partition...
fastboot flash recovery "C:\usr\NRT\data\Recovery_Stock\recovery_stock_mantaray_5.1.1_LMY49J.img"
Temporarily Booting TWRP...
fastboot boot "C:\usr\NRT\data\Recovery_Custom\TWRP\twrp-3.0.2-0-manta.img"
Flashing 'undo-perm-recovery-signed.zip'...
Waiting for your device...
That's where it ended up... not getting any further. Once again, attempting to boot into recovery gets it stuck on the Google logo.
How screwed am I? Is there a thread somewhere in the forum anyone can point me at?

Well, in spite of the crickets... I understand. I've managed to resurrect my Nexus 10. Alas there are no good contemporary replacements. The last so-called nexus table google put out there was too damn expensive in the first place and they seem to have abandoned the tablet market to others.
So the key question here: So long as I can get this tablet into the bootloader is it generally possible to reflash a stock image? I'd like to know of any types of caveats etc. The mystery I have still though is: How or why did my N10 get into this state (of of only being able to get to the Google screen) in the first place? I didn't have any questionable apps installed etc. I was totally on stock. One thing that did happen a week or two prior to my tablet going belly up... was somehow the thing lost my google account info and gmail had none of my accounts in place... it was very odd.
I did have to wipe the system because evidently you can't flash anything onto a locked bootloader (the Nexus Root Toolkit by wugfresh is up to date so far as the N10 is concerned at least). I know I could have resorted to using fastboot.exe and the adb directly but this was a touch easier. Alas the backup options for it say you need an unlocked bootloader which seems to be a chicken/egg issue if you've always been on stock.... so it goes.