Develop Bugs

[Q] Screen flickering / Bootloop -> Is my Nexus dead? Data recovery possible?

Hello,
just some hours ago my Galaxy Nexus (SC-04D) rebooted while lying on the table next to me. After several sings of vibration I noticed that the phone doesn't boot completely.
When switching on the phone I get the turn-on-vibration, then the google letters are displayed. Most times the word "google" flickers from left to right over the screen (only the line where the word is supposed to be). Sometimes it boots further and I get the colored "X" displayed. This symbol starts flickering, too and if it went so far it reboots.
Here are two pictures I took from the phone failing to boot:
picpaste.com/img_0001_01-Rmm7kDYb.jpg
picpaste.com/img_0001-eoLqVoiM.jpg
The phone is running stock Android from Docomo. The phone is about 14 months old and has never been unlocked, rooted, modded, taken a bath, ... 'til now.
I tried starting with and without SIM-card, with and without charger attached and let it lie around for several minutes without battery between my tries.
Is there any chance to get my data from the phone or even get it fixed? Please give me a hint what I can do.

Well the Red exclamation mark means that there is a problem with the phone reading the build path. Since you have never rooted the phone, this would mean that the files got corrupt on the phone. With a non-rooted phone a Factory Reset is about the only solution, but is probably only a temporary fix. This is most likely caused by too many apps on the phone and it just freaked out on something eventually.
I think these options might work for you, however I cannot confirm since I have rooted my phone from day one and never looked back:
Power button + up volume= recovery

Thanks GPFboy for your fast response,
GPFboyJS said:
Well the Red exclamation mark means that there is a problem with the phone reading the build path. Since you have never rooted the phone, this would mean that the files got corrupt on the phone. With a non-rooted phone a Factory Reset is about the only solution, but is probably only a temporary fix.
Click to expand...
Click to collapse
As far as I understand a factory reset results in a complete loss of data on the phone, right? So without root/unlock there's no chance to get my data from the phone? That would be really bad.
GPFboyJS said:
This is most likely caused by too many apps on the phone and it just freaked out on something eventually.
Click to expand...
Click to collapse
What is "too many"? I think there are about 35 apps installed atm. By the moment the problem arose wifi and 3g-data,BT,GPS were disabled and just a minute before I took a look how late it was. So nothing special.
GPFboyJS said:
I think these options might work for you, however I cannot confirm since I have rooted my phone from day one and never looked back:
Power button + up volume= recovery
Click to expand...
Click to collapse
The phone reaches fastboot mode, but when selecting recovery mode I get the google logo and after that the open android with the red exclamation mark. That doesn't look good, does it?

BrainSD said:
The phone reaches fastboot mode, but when selecting recovery mode I get the google logo and after that the open android with the red exclamation mark. That doesn't look good, does it?
Click to expand...
Click to collapse
thats stock recovery.
is your bootloader already unlocked or no?

Zepius said:
is your bootloader already unlocked or no?
Click to expand...
Click to collapse
It's still locked.

you might try and go into recovery,
then press (i think) power and vol up and try and see if you can wipe just cache.

Zepius said:
you might try and go into recovery,
then press (i think) power and vol up and try and see if you can wipe just cache.
Click to expand...
Click to collapse
ok, I tried that several time now, but it didn't work. The only thing when I select recovery and press the power button is that I get the google logo and then the dead android + red exclamation sign, but this screen is scrambled and shows flickering pixels as shown in one of my pictures in the first post. So recovery mode seems not to work for me?
Is there a software or hardware problem with my device?

BrainSD said:
ok, I tried that several time now, but it didn't work. The only thing when I select recovery and press the power button is that I get the google logo and then the dead android + red exclamation sign, but this screen is scrambled and shows flickering pixels as shown in one of my pictures in the first post. So recovery mode seems not to work for me?
Is there a software or hardware problem with my device?
Click to expand...
Click to collapse
You can try to unlock your boorloader and flash a custom recovery like cwm or twrp. Maybe that helps. You can always go back and re lock it.
Sent from my Galaxy Nexus using XDA Premium HD app

mrgnex said:
You can try to unlock your boorloader and flash a custom recovery like cwm or twrp. Maybe that helps. You can always go back and re lock it.
Sent from my Galaxy Nexus using XDA Premium HD app
Click to expand...
Click to collapse
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.

beekay201 said:
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.
Click to expand...
Click to collapse
Well if I was him I would be more worried about my expensive phone instead of data. Maybe a lesson for later to have a backup
Sent from my Galaxy Nexus using XDA Premium HD app

beekay201 said:
He wants to keep his data... which, at this point, seems rather impossible.
If fastboot doesn't solve it, i would try omapflash, OP. That "flickering" doesn't look good.
Click to expand...
Click to collapse
Yes exactly this is the point. Since I don't have a current data backup the first thing to try is getting my data from the phone. I already tried temporary loading the clockwork recovery through fastboot - with the galaxy nexus toolkit and by hand(sdk) - but it failed ("Bootloader locked").
What I'm wondering about is the fact that the phone seems to behave normally in odin and fastbood mode but going nuts the moment it's expected to boot. Besides the flickering google logo and the "matrix-modded" dead android it even ended up in a totally green screen one time.
At the moment I don't dare trying to unlock/flash the phone because of being afraid getting stuck and ending up with the phone being in some kind of undefined / totally broken state. Initially I was in hope of being able to rescue my data but now i will try my luck with docomo support first.
As far as I understood omapflash is primary used for recovering bricked phones not even starting to odin/fastboot mode. But thanks to your hint I found http://forum.xda-developers.com/showthread.php?t=2016628 "Unlock bootloader on GT-I9250 without wipe and without root" This might bring some chance for data access.
I will try to get through 1 to 4 of the guide first and see how far I get.
If this won't work I might try to unlock, recover and try to "undelete" what's possible. (http://forum.xda-developers.com/showthread.php?t=1994705)
Does this order make sense?
Btw, having a dead phone is bad, of course, even when I got it new for 2300Yen but loosing some pictures i really liked and having no phone atm currently hurts more. Especially when knowing that I was thinking of copying all photos to my computer only one day before when I pulled only some minor important ones from the phone I needed for work and planned to do a full backup and unlock this weekend when I get back my 'Milestone' currently lent to someone else.
Once again something I learned. Backup! Even you phone.

BrainSD said:
As far as I understood omapflash is primary used for recovering bricked phones not even starting to odin/fastboot mode. But thanks to your hint I found http://forum.xda-developers.com/showthread.php?t=2016628 "Unlock bootloader on GT-I9250 without wipe and without root" This might bring some chance for data access.
Click to expand...
Click to collapse
!!!
It will work actually, I read/also replied to that thread! I had forgotten about it, sorry. I must say that if you had already read the stickies that matter, you'd already know about it.
It will unlock your bootloader, bypassing fastboot. Still, it's not for the faint hearted. I refered to omapflash because its a low level tool, it doesn't require the bootloader to be unlocked, and is able to restore the bootloader to working state, and I got there because you mentioned you see graphical glitches/flickering which may indicate bootloader partition failure and/or consequent corruption.
I think that's your best shot at trying to get your data back. After unlock, boot to fastboot and 'fastboot boot custom_recovery.img', and grab your stuff (if you can) from /data/.

beekay201 said:
!!!
It will work actually, I read/also replied to that thread! I had forgotten about it, sorry. I must say that if you had already read the stickies that matter, you'd already know about it.....
Click to expand...
Click to collapse
Your hint was very helpful for me getting the right direction since I'm just starting to dig into all this stuff.
Unlocking went quite well. Writing back to the phone worked without a problem and after that it's shown as unlocked in fastboot mode.
It even started loading clockwork recovery with fastboot. But the initial cw recovery screen (their logo and the cw recovery footer) was already shown on a scattered screen (google logo + unlocked lock was fine). After that the usb port connected and disconnected several times, then the screen went blank.
May this be because of corrupted fs or defective hw?
From my understanding with omapflash one have raw access to the phones internal memory similar to with dd on Unix/Linux. So currently I'm trying to dump ("upload") the emmc from the phone - actually in smaller chunks since omapflash needs to allocate all the memory in advance for the upload and to prevent interruptions. This will take a while...
After that I want to try to 'cat' the parts together and mount the filesystem - might be possible to do this from linux since it seems to be ext4 filesystems

BrainSD said:
Your hint was very helpful for me getting the right direction since I'm just starting to dig into all this stuff.
Unlocking went quite well. Writing back to the phone worked without a problem and after that it's shown as unlocked in fastboot mode.
It even started loading clockwork recovery with fastboot. But the initial cw recovery screen (their logo and the cw recovery footer) was already shown on a scattered screen (google logo + unlocked lock was fine). After that the usb port connected and disconnected several times, then the screen went blank.
May this be because of corrupted fs or defective hw?
From my understanding with omapflash one have raw access to the phones internal memory similar to with dd on Unix/Linux. So currently I'm trying to dump ("upload") the emmc from the phone - actually in smaller chunks since omapflash needs to allocate all the memory in advance for the upload and to prevent interruptions. This will take a while...
After that I want to try to 'cat' the parts together and mount the filesystem - might be possible to do this from linux since it seems to be ext4 filesystems
Click to expand...
Click to collapse
Great, so far so good.
Yeah, they're ext4 images, but sparse images i believe - link

[Q] Stuck at Unlock Bootloader screen

My soft brick Verizon gnex is giving me a bit of trouble. It was stock, locked, and all those other things that you all probably frown upon, but worked fine for me and I had not reason to change this. It got stuck in a boot loop and a hard reset and wipe didn't do anything. I found efrant's guide and got everything set up. fastboot devices results in a correct read of my device and I can run fastboot reboot-bootloader, which I did as a check to make sure computer to phone commands were working fine.
The problem is that when I run fastboot oem unlock, I get the unlock bootloader?, can scroll to "Yes" and then my phone gets stuck there...indefinitely. I've let it go for up to two hours and don't get anywhere. If I terminate with a battery pull/ unplug, I get a "too many links" error. Running wug's toolkit does the same thing. Rebooting into fastboot works, but the phone is still locked. If I select "No" on the unlock screen, I get the Google splash forever. Any suggestions?

i hate to ask this question... but...
when you scrolled to yes, did you press the power button to accept the selection?

Zepius said:
i hate to ask this question... but...
when you scrolled to yes, did you press the power button to accept the selection?
Click to expand...
Click to collapse
I wish the solution were that easy (though if I were that stupid....yikes). I did hit the power button and cannot scroll to No. The device is really just stuck there. My cmd prompt is just hanging (...) too. I suppose it could be that the communication is only going one way (computer to phone) but somehow isn't going phone-to-computer. I've tried different drivers/cords/USB ports, but (right now) don't have another computer that I can play around on.
I may give it one last driver reinstall try, but it's looking like Odin is the way to go?

molgator24 said:
My soft brick Verizon gnex is giving me a bit of trouble. It was stock, locked, and all those other things that you all probably frown upon, but worked fine for me and I had not reason to change this. It got stuck in a boot loop and a hard reset and wipe didn't do anything. I found efrant's guide and got everything set up. fastboot devices results in a correct read of my device and I can run fastboot reboot-bootloader, which I did as a check to make sure computer to phone commands were working fine.
The problem is that when I run fastboot oem unlock, I get the unlock bootloader?, can scroll to "Yes" and then my phone gets stuck there...indefinitely. I've let it go for up to two hours and don't get anywhere. If I terminate with a battery pull/ unplug, I get a "too many links" error. Running wug's toolkit does the same thing. Rebooting into fastboot works, but the phone is still locked. If I select "No" on the unlock screen, I get the Google splash forever. Any suggestions?
Click to expand...
Click to collapse
I aint a grave digger , I can see the post date but Have you found Solution yet ?? I am myself stuck there ?

herecomesmaggi said:
I aint a grave digger , I can see the post date but Have you found Solution yet ?? I am myself stuck there ?
Click to expand...
Click to collapse
No dice. Samsung offered to let me send it back, but I never got around to it. If you send yours in and/or figure it out, let me know and I may turn my current paperweight into something usable. Best of luck, and sorry I don't have more to offer!

OK thanks for clearing that out. I have tried everything, it seems that memory is corrupted and that's why bootloader can't format it and is stuck at unlocking... I will update if I found anything.
Avoid Spells!!! "Auto correct : ON"

[Q] Nexus 7 suddenly bricked ?

Hello all, so yesterday I went on my tablet (Nexus 7 2013 WIFI ver.) and browsed the net a bit and went to sleep. I recall having around 30% battery power. This morning I wake up to an apparently flat battery (power button didn't turn on anything) so I just plugged it in and did something else. After a while, I took my tablet and started it with the power button. However, it got stuck on the Google logo and never fired up anything. I've rooted the tablet quite some time ago (months) so the cause is not from there.
Things I haven't recently done:
Installing an app.
Rooting or flashing anything.
Updating an app.
Things I have tried doing to fix the problem:
Booting into FASTBOOT then trying the recovery mode = still stuck on the Google logo.
Booting a custom recovery image using Wug's toolkit = frozen at the team logo (TWRP) / black screen (CWM).
Flash Stock + Unroot (Soft-Bricked/Bootloop) = FAILED (flash write failure).
So now I'm really stuck and desperate to make the device work again. I've been reading all day long and trying all sorts of solutions to no avail. And it seems far-fetched to me for a device like this to just instantly brick itself without any reason at all.
Can anyone help me with this case ? Or does anyone has any idea what just happened to my tablet ? :crying:
EDIT: I'm afraid that warranty might not work as the device was unlocked and rooted so it's the last solution for me.

Bumpity bump
No one has any idea what happened to the tablet and how to fix it ? I've tried doing some more flashing but to no avail. It just refuses to flash and keeps failing to write the files.

I think you need to leave out on the charger for 1/2hr without doing anything with it. You are probably using what little power it has charged by trying to reboot it, etc.
I had to do that once and it did the trick.
Sent from my Nexus 7 using XDA Free mobile app

There is no reason you should not be able to get in to recovery (power and volume down).
You could call Motorola. They have good tech support.

The exact same thing happened to me. I rooted it months ago and haven't changed a thing since then. It just froze up a few days ago. I restarted and it just gets stuck on the google screen. I can get into the bootloader, but when I try to go to recovery, the google screen comes up and won't go away. I've tried every method I can find for flashing the stock image and absolutely nothing is working. I just get stuck on the google screen.
Please update this if you find a solution!

Do u guys have the most up to date version of whatever particular recovery that you're on?

Yep. I've flashed the stock recovery multiple times to no avail. :/

nexusjas said:
Yep. I've flashed the stock recovery multiple times to no avail. :/
Click to expand...
Click to collapse
If you can't get into recovery or flash any images it sounds to me like a hardware failure. Bad memory maybe? If you've tried everything then RMA to Asus before the one year warranty runs out.
Have you tried to see if your computer sees your N7 by typing fastboot devices if you have the sdk installed?

wantabe said:
If you can't get into recovery or flash any images it sounds to me like a hardware failure. Bad memory maybe? If you've tried everything then RMA to Asus before the one year warranty runs out.
Click to expand...
Click to collapse
Not what I wanted to hear, but you're probably right. Thanks :/

nexusjas said:
Not what I wanted to hear, but you're probably right. Thanks :/
Click to expand...
Click to collapse
I was to slow with my update. Does your computer see your N7 with fastboot?

wantabe said:
I was to slow with my update. Does your computer see your N7 with fastboot?
Click to expand...
Click to collapse
Yes, I can get into the bootloader just fine and I can use fastboot. I go through the flashing process and the command prompt says everything flashed successfully, but when I restart the device, it hangs on the google logo. The same thing happens when I try to boot into recovery.

nexusjas said:
Yes, I can get into the bootloader just fine and I can use fastboot. I go through the flashing process and the command prompt says everything flashed successfully, but when I restart the device, it hangs on the google logo. The same thing happens when I try to boot into recovery.
Click to expand...
Click to collapse
If you fastboot flashed the factory image and can't boot up then it sounds like a hardware problem. Out of ideas, sorry.

wantabe said:
If you fastboot flashed the factory image and can't boot up then it sounds like a hardware problem. Out of ideas, sorry.
Click to expand...
Click to collapse
I'm not sure what happened, but I just ran this little utility again (I've done it many times over the last week or so to no avail) and it actually worked. Hopefully it keeps working!
Thanks for your help!

Another Bricked Nexus 7 after Lollipop

Seems a few are having the same problem as me after trying to flash 5.0
My Nexus will no longer boot past the Google Logo (White one). I can only access the Bootloader. When I try to go to recovery I see the TWRP logo but stays stuck there. I tried flashing a new image a few times but always had the same problem.
I then tried to relock the bootloader and unlock again again to prepare a fresh install. This is where it gets worse. I managed to lock the bootloader but I can no longer unlock. I get to the screen warning that data will be wiped if I choose "YES", but when I do proceed, I stay stuck on "Erasing userdata...". I left it for 5 hours and was still stuck with the same message.
I cant see what else I can do now.
Ive read a few threads saying its a motherboard issue. Seems weird that it appeared when I tried to install Lollipop. Also seems Im not the only one.

this worked for me
I'm sure someone wiser will respond to you later but ..... I've been in a similar situation.
I use Windows 7 64bit and always connect device with usb 2 port (i.e. not usb3).
I was getting stuck on the google logo with an open lock symbol low on the screen - indicating unlocked bootloader. Like you could get into recovery but unable to get any further once there.
Try using Wugfresh's Nexus Root Tool. Look in the development thread. I'd suggest reading his faq's.
Download and install the latest version 1.9.6 (as I recall) - I had problems when using the earlier versions.
Get an stock image downloaded.
Then you should be able to flash the image using the force flash method he mentions in his faq. You set it in the options menu.
Set USB debugging on the device and usb options for storage to ptp rather than mtp - that's what worked for me.
You'll probably see repeated "installing driver" messages and new "open location" popups as you go through it.
(if your bootloader is locked you'll need to unlock it first. - just re-read your original post and I'm hoping that the latest NRT version will get you unlocked OK.)
If you have problems with this at first try going through the driver installation section of the tools.
After that you can use the same tool to root it. That didn't work completely but did allow me to use an OTG flash drive. If you need full root there's a patch you need to flash - Key Pie patch - took me a while to find it but it's somewhere on these forums.
After the problems I had everything went smoothly in the end. Just be prepared to watch it go through various rebootings while the magic is being done.
Apologies if this is a bit haphazard - I tend to try and rush through things and then forget what it was exactly I did!

I have tried NRT but cant do anything as I cant unlock the bootloader. I have tried both Fastboot and NRT, they both block at "erasing userdata".

Just a thought
Sorry to hear that.
Have you tried "Flash Stock + unroot" with the "Soft-bricked/Bootloop" option in NRT? I now recall that's something that helped me get mine recovered. Just a thought.
I recall reading forum posts that suggested I might have motherboard issues - but I didn't believe it was likely to be the case so I kept trying.

Tried all NRT options including force flash.
Problem is none work with the locked bootloader.

Nexus Root Toolkit v1.9.7 out now
Change log:
What’s new in Nexus Root Toolkit 1.9.7: November 16th, 2014
· Included the latest Masterlists to prevent users who never utilized the “Update” in the kit from getting the AutoIt error (for KTU84P Nexus 7 2013). This error was due to the modified boot.img for that build being accidentally removed from the server. Its was then reuploaded and the masterlists were updated, but those users who never updated would still get the error.
· No longer will the “Force Flash” recommendation be made to N4 users, because it seems to cause a bootloop – however factory resting will fix that either way.

IDEM
I spent exactly the same as you, I also lock the bootloader and now I can not do anything, always get "write failure" and when I try to unlock stays forever "erase ..."
There will be some way to revive it?
Cursed Android 5.0!
If the problem is confirmed to be Android 5.0, Google can help solve these problems?

Use the instructions to reflash your bootloader.
http://blog.laptopmag.com/how-to-hard-reset-a-bricked-nexus-7-with-your-pc
Note replace the instructions to download 4.1.1. with the correct version of the ROM you want to flash. Make sure you grab the correct version for your device. Flashing the wrong bootloader can hard brick your NEXUS with no chance of recovery. Also don't relock your bootloader unless you are certain that you will never want to flash again. Unlocking wipes all of your data and you also can't be rooted if you lock it again.

Doesnt work. Cant get passed the first step. After 1 hour its still "erasing boot..."

I flashed 5.0 successfully... You can't send it to Google with warranty? Try on other computer, do it manually using fastboot and don't give up!

As long as you can still boot into Fast Boot..
Your device can be restored..
I suggest using Wugfresh's Nexus toolkit
http://www.wugfresh.com/nrt/
The issues coming from the latest upgrade are common problems when ever we upgrade..
Its always better if you know how, just use the Nexus Toolkit and install the factory image..
Then it will sit at bootup for about 5-7 mins, then restore your apps... Profit
OTAs will always cause issues with some devices..

Zaphodspeaks said:
As long as you can still boot into Fast Boot..
Your device can be restored..
I suggest using Wugfresh's Nexus toolkit
http://www.wugfresh.com/nrt/
The issues coming from the latest upgrade are common problems when ever we upgrade..
Its always better if you know how, just use the Nexus Toolkit and install the factory image..
Then it will sit at bootup for about 5-7 mins, then restore your apps... Profit
OTAs will always cause issues with some devices..
Click to expand...
Click to collapse
Again.. I cant unlock the bootloader whether manually trying with fastboot or running NRT. Flashing a stock image is not possible.

tigerdim said:
Again.. I cant unlock the bootloader whether manually trying with fastboot or running NRT. Flashing a stock image is not possible.
Click to expand...
Click to collapse
If you have not tried the latest version of NRT, you may of fried your locked bootloader..
Regardless, don't give up... Someone will come to the rescue.. Nexus devices are pretty robust..
Try using another cable, make sure you have the correct driver, double check in Device Manager...
Then try again with the lastest NRT.. Mine just updated.. As a rule of thumb its better not to use a USB hub if thats the case.. Try swapping out your cable, make sure you have the Nexus drivers... I had to re install mine..

tigerdim said:
Doesnt work. Cant get passed the first step. After 1 hour its still "erasing boot..."
Click to expand...
Click to collapse
I'm in the exact same spot. Also, I know that I don't have USB debugging enabled, so not sure if I'm blocked out because of that. Very frustrating.
The computer sees the tablet though. If I click on List Devices in NRT Advanced Utilities, it shows my serial # fastboot.
update: I tried the Unlock command and it goes to the Unlock Bootloader screen. I click Yes, but then the device just hangs on that screen (I let it sit for 30-40 minutes). Ideas?

dayz3r0 said:
I'm in the exact same spot. Also, I know that I don't have USB debugging enabled, so not sure if I'm blocked out because of that. Very frustrating.
The computer sees the tablet though. If I click on List Devices in NRT Advanced Utilities, it shows my serial # fastboot.
update: I tried the Unlock command and it goes to the Unlock Bootloader screen. I click Yes, but then the device just hangs on that screen (I let it sit for 30-40 minutes). Ideas?
Click to expand...
Click to collapse
It hangs because its probably stuck at "erasing userdata". If you do it manuall with fastboot oem unlock you will see this in the cmd window.

tigerdim said:
It hangs because its probably stuck at "erasing userdata". If you do it manuall with fastboot oem unlock you will see this in the cmd window.
Click to expand...
Click to collapse
yep, it does

I ve given up . Bought a Nexus 9. Wasted too much time on this.

Having the same problem
My Nexus 7 (2013 32gb wifi) was working just fine on Monday. Had an unusual freeze up when I was reading something on Adobe Acro., but a quick reboot had it running again. I remember a notification about a system update but didn't pay it much mind. Later that evening I went to pick the N7 up and it was stuck on the Google loading screen. Freezes at Google loading screen when I attempt Recovery mode from Fastboot. Fastboot OEM unlock gives me the same stall at 'erasing user data' as mentioned above (left it on for this for 12+ hours yesterday and nothing). I haven't tried a different cable other than stock yet but I have tried multiple ports and two different machines to unlock the bootloader so I can flash the OS. No other functions with NRT (1.9.9) work including forced flash+unroot. I can't even flash the bootloader or erase or format any partitions. Feeling a little SOL here and I think it has something to do with Lollipop update.
N7 was unrooted and used for reading for the past couple weeks, so pretty vanilla use over the recent past.
4 months out of warranty with Asus and they want an est. $100 for RMA. Google tossed me to them after dragging me through the basic stuff I've been doing the past few days. Going to keep messing with it I suppose once exams are over but feel like I'm running out of things to try. If anyone has any suggestions, questions or a solution, posting them here would be much appreciated.

My upgrade from 4.4.4 to 5.0.1 took ages. It was like bouncing the four small balls for perhaps 5 minutes. Just have patience.
I would recommend not to use xposed or titanium backup as I expect those programs mess with /system files and that can break the android upgrade script. Just disable any unwanted bloatware in regular application control. At least all my updates have been successful so far. Yes, I am rooted.
Good luck.
---------- Post added at 12:51 AM ---------- Previous post was at 12:45 AM ----------
For Wugfresh excellent "Nexus Root Toolkit" to work you need to enable usb debugging in developer menu. You enable the developer menu by tapping a lot on your version information.
The usb debugging gets reset on every upgrade.

Mordecai253 said:
My Nexus 7 (2013 32gb wifi) was working just fine on Monday. Had an unusual freeze up when I was reading something on Adobe Acro., but a quick reboot had it running again. I remember a notification about a system update but didn't pay it much mind. Later that evening I went to pick the N7 up and it was stuck on the Google loading screen. Freezes at Google loading screen when I attempt Recovery mode from Fastboot. Fastboot OEM unlock gives me the same stall at 'erasing user data' as mentioned above (left it on for this for 12+ hours yesterday and nothing). I haven't tried a different cable other than stock yet but I have tried multiple ports and two different machines to unlock the bootloader so I can flash the OS. No other functions with NRT (1.9.9) work including forced flash+unroot. I can't even flash the bootloader or erase or format any partitions. Feeling a little SOL here and I think it has something to do with Lollipop update.
N7 was unrooted and used for reading for the past couple weeks, so pretty vanilla use over the recent past.
4 months out of warranty with Asus and they want an est. $100 for RMA. Google tossed me to them after dragging me through the basic stuff I've been doing the past few days. Going to keep messing with it I suppose once exams are over but feel like I'm running out of things to try. If anyone has any suggestions, questions or a solution, posting them here would be much appreciated.
Click to expand...
Click to collapse
They quote you $100 RMA, but once you send it in they will send you an invoice for $200. $165 for the motherboard, $25 labor and $10 return shipping. I fought it and they eventually dropped $10 for the return shipping. Last time I ever deal with Asus.
Sent from my Nexus 9 using Tapatalk

Bricked?!?

Just got the XL on Friday. Loved it.
Unlocked the bootloader about 45 minutes ago. Wiped upon reboot (as normal). Google logo displayed with progress bar but the animation never stopped.
Downloaded the factory image from Nov. Ran the flash-all.bat from bootloader. No errors. Rebooted. Got a "Your device is corrupt" error. Phone stuck on the Google boot screen. Going into recovery just gives me a dead droid.
Attempting to flash the 8.1 developer preview results in the same issue. As of right now, nothing seems to boot at all. I've changed USB-C cables, since I've read about those causing issues, but still the same.

derekr44 said:
Just got the XL on Friday. Loved it.
Unlocked the bootloader about 45 minutes ago. Wiped upon reboot (as normal). Google logo displayed with progress bar but the animation never stopped.
Downloaded the factory image from Nov. Ran the flash-all.bat from bootloader. No errors. Rebooted. Got a "Your device is corrupt" error. Phone stuck on the Google boot screen. Going into recovery just gives me a dead droid.
Attempting to flash the 8.1 developer preview results in the same issue. As of right now, nothing seems to boot at all. I've changed USB-C cables, since I've read about those causing issues, but still the same.
Click to expand...
Click to collapse
I have no experience with your issue but it sounds like a soft brick. Im sure if you follow this guide ypu can fix it. https://forum.xda-developers.com/pixel-2-xl/how-to/guide-unlock-flash-root-pixel-2-xl-t3702418 hopefully this helps until someone who really knows can help you.

Dielahn said:
I have no experience with your issue but it sounds like a soft brick. Im sure if you follow this guide ypu can fix it. https://forum.xda-developers.com/pixel-2-xl/how-to/guide-unlock-flash-root-pixel-2-xl-t3702418 hopefully this helps until someone who really knows can help you.
Click to expand...
Click to collapse
That simple thread actually gave me an idea. I grabbed the latest SDK tools. Presto!
Note to anyone else with this issue...

derekr44 said:
Just got the XL on Friday. Loved it.
Unlocked the bootloader about 45 minutes ago. Wiped upon reboot (as normal). Google logo displayed with progress bar but the animation never stopped.
Downloaded the factory image from Nov. Ran the flash-all.bat from bootloader. No errors. Rebooted. Got a "Your device is corrupt" error. Phone stuck on the Google boot screen. Going into recovery just gives me a dead droid.
Attempting to flash the 8.1 developer preview results in the same issue. As of right now, nothing seems to boot at all. I've changed USB-C cables, since I've read about those causing issues, but still the same.
Click to expand...
Click to collapse
By the way, the dead Droid is recovery, from that screen, hold power and press up for recovery menu, in case you ever get stuck again

And just for future reference for others who may be in a similar issue and stumble across this thread...
As long as you've successfully unlocked your bootloader and "fastboot devices" successfully pulls up your device, you'll be just fine. You just gotta take a step back, breath and then make sure your SDK tools are updated before moving forward.

if the flash tool isn't working, use my script:
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761

i know this is probably going to sound really stupid but somehow i bricked my phone as well....not exactly sure what happened but it had to do with something after installing/booting TWRP. anyway, i am stuck with nothing on my phone and can't seem to do anyting....derek, how did you use sdk to fix???
*edit I can't even have fastboot devices pull my phone....am i really f'ed?

warlord1352 said:
i know this is probably going to sound really stupid but somehow i bricked my phone as well....not exactly sure what happened but it had to do with something after installing/booting TWRP. anyway, i am stuck with nothing on my phone and can't seem to do anyting....derek, how did you use sdk to fix???
*edit I can't even have fastboot devices pull my phone....am i really f'ed?
Click to expand...
Click to collapse
If you cannot get the Bootloader to load, then you are seriously SOL. You have a hard bricked device.
Only thing you can do now is raise a support case with Google and hope that allow you to get a replacement with the only explanation being, "The phone restarted on it's own and never came back up." Or something similar and vague without expressly telling them what you did.

warlord1352 said:
i know this is probably going to sound really stupid but somehow i bricked my phone as well....not exactly sure what happened but it had to do with something after installing/booting TWRP. anyway, i am stuck with nothing on my phone and can't seem to do anyting....derek, how did you use sdk to fix???
*edit I can't even have fastboot devices pull my phone....am i really f'ed?
Click to expand...
Click to collapse
Make sure you try a different cable to connect your phone to your PC.. I had the same issue, and I try two different cable before my device accepted the flash-all

Okay, so somehow fortunately I was able to get back into my TWRP 1 last time and able to push my files I needed to boot it back up...
Raistline said:
If you cannot get the Bootloader to load, then you are seriously SOL. You have a hard bricked device.
Only thing you can do now is raise a support case with Google and hope that allow you to get a replacement with the only explanation being, "The phone restarted on it's own and never came back up." Or something similar and vague without expressly telling them what you did.
Click to expand...
Click to collapse
The funny thing is I was able to and was in bootloader but I couldn't use any commands from my computer (as far as I know) which is why I was freaking out.
I should've but I didn't actually try using other cables. I did try other usb ports but that didn't do anything.
I still kind of believe that my phone (somehow) got messed up from loading TWRP. I don't know if it's because it is still beta or what but I am like 99% sure it was from that as I can't see anything else being the problem.

warlord1352 said:
i know this is probably going to sound really stupid but somehow i bricked my phone as well....not exactly sure what happened but it had to do with something after installing/booting TWRP. anyway, i am stuck with nothing on my phone and can't seem to do anyting....derek, how did you use sdk to fix???
*edit I can't even have fastboot devices pull my phone....am i really f'ed?
Click to expand...
Click to collapse
just install the lastest fastboot and adb drivers from google and flash the factory image using commands or use any script .
after that everytime my phone got stuck on google logo .
how i fixed - Temporary boot twrp beta2 recovery using cmd (fastboot boot abc.img) "here abc refers to the correct name of the img file" and once booted into recovery go to advanced and select Partition A and reboot.
It will boot up just fine
Here is the link for a script that will flash both partitions with stock image
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761

derekr44 said:
Just got the XL on Friday. Loved it.
Unlocked the bootloader about 45 minutes ago. Wiped upon reboot (as normal). Google logo displayed with progress bar but the animation never stopped.
Downloaded the factory image from Nov. Ran the flash-all.bat from bootloader. No errors. Rebooted. Got a "Your device is corrupt" error. Phone stuck on the Google boot screen. Going into recovery just gives me a dead droid.
Attempting to flash the 8.1 developer preview results in the same issue. As of right now, nothing seems to boot at all. I've changed USB-C cables, since I've read about those causing issues, but still the same.
Click to expand...
Click to collapse
Something similar for me but with different reason for starting all this. When I did sideload of 8.1 all went well but my camera wasn't working (I saw the same thing in 8.1 DP) so I needed to go back to 8.0 but you can't sideload downgrade. I went to Google to get replacement sent and figure I might try to sort things out with this one in the meantime. I had to unlock to be able to just flash the factory 8.0 image so did that with both the unlock commands, then after that and after update I just got hung on the white screen with google logo. I was able to get back to bootloader with the power button + volume from off and from there I would get to the screen with the android and the exclamation point - I think you hold volume up and then power to go to sideload. Once there I just sideloaded 8.0 and all was good. I do still get the warning about corrupt whatever and have to hit power on reboot or fresh power up but I could redo the locks and whatnot and all seems fine now with camera working.
At the least I got camera back while waiting for replacement.
b4db0ys said:
just install the lastest fastboot and adb drivers from google and flash the factory image using commands or use any script .
after that everytime my phone got stuck on google logo .
how i fixed - Temporary boot twrp beta2 recovery using cmd (fastboot boot abc.img) "here abc refers to the correct name of the img file" and once booted into recovery go to advanced and select Partition A and reboot.
It will boot up just fine
Here is the link for a script that will flash both partitions with stock image
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761
Click to expand...
Click to collapse
This cleaned things up for me - still no camera in 8.1 but I got the replacement coming.

So I'm in the same boat as the OP but my bootloader is locked. Am I totally screwed? Is there a way to do any of this when the device won't show up in ADB?

Deuces said:
if the flash tool isn't working, use my script:
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761
Click to expand...
Click to collapse
can you just develop some scripts that working on locked bootloader ?
i have a bricked Pixel xl with locked bootloader and oem locked

If you can boot twrp but can't connect to a pc, a type c flash drive comes in handy. Load it with the needed ota, twrp installer zip and Just mount it and you're good to go.