Develop Bugs

[Q] Help: Samsung i927 crashes on boot.

Hello.
First off all, my i've had this phone for about 4 months. I bought it and inmediately updated from 2.3 to 4.0.4 and then installed Cyanogenmod 4.3 and it worked just perfect. But, two days ago it started to crashing in a weird way so i had to remove the battery and put it on again for the phone to work. But now, the phone just won't start. It crashes it cyanogenmod logo and just stucks there for ever or simply re-starts and then again, freezes in cyanogenmod. It started a couple of times by just removing the battery and turned on again, but now it got worse. Now the just doesn't start never, just get stuck in the CM logo.
I triyed wipping /cache /system /data /dalvik everything but it did not worked. Next, i triyed installing stock 4.0.4 rom and the phone started (YAY!) but, after installing my apps and sync-ing my accounts i rebooted my phone and, then again, it crashed on the start up again. I've try a lot of things and no one seems to work. It just get stuck in the logo after SAMSUNG.
Help.​

Which apps did u install...any system tuner apps...
Sent from my GT-N7000 using Tapatalk

I did not install anything before the issue.
But, like two weeks ago i installed: Clean Master (Without root permissions) and Go launcher Theme.
I am being honest, i did not do anything for this to happen. Then again, i repeat to you my problem: My phones crashes in the logo after samsung. It started two days ago, crashing while using my phone. Then it started to crash in the booting. I wiped and nothing happened. I Installed Stock rom deoxed and it started but just lasted the first boot. Then, when i restarted the phone, it would crash in the booting again. Now, i flashed the PURE STOCK ROM 4.0.4 and it have not passed trought the "Think possible" logo

Try flashing the basic stock firmware from Samsung using Odin... Then re-root and check
Sent from my GT-N7000 using Tapatalk

try to remove battery and wait at least 4 minutes, and put back.
It helped on my old phone.

bubor said:
try to remove battery and wait at least 4 minutes, and put back.
It helped on my old phone.
Click to expand...
Click to collapse
I removed all night and still nothing. At the begining of the issue removing the battery helped, but now it seems like it got worse.

grtsarav said:
Try flashing the basic stock firmware from Samsung using Odin... Then re-root and check
Sent from my GT-N7000 using Tapatalk
Click to expand...
Click to collapse
I did it in the morning. It flashed correctly and when the ODIN re-booted my phone it crashed in the logo, like i have not done anything. I have been triying to turn it on for like 4 hours and nothing.

Can H811 Bootloader Be Re-Locked?

I'm stuck and confused:
Had a Nexus 4 and 5 for years. Decided to upgrade this past November to the LG G4 (T-Mobile H811)
Got it to root without touching the boot loader.
In came MM and then I had issues of repeating the process.
I came across a solution, to unlock my bootloader. So I did it and managed to get my G4 rooted while running stock LG MM (H81120i).
Everything was running well for several months, but then I started to see erratic behavior. It would heat-up in my pocket for no reason. It would not save pictures. Connections via WiFi and LTE were breaking up. All in all, I wasn't happy and I missed the stock Google interface.
So I've decided to install CM13. Had many issues of getting it to work for several days, which included persistent closings of Google Play services (and many others) and not being able to make/receive calls (it would automatically reboot) After several different attempts, I managed to get it all working. Cleared/Wiped everything off my internal drive, installed the "LG-H81120i-Flashable.COMPLETE" and "cm-13.0-201605xx-NIGHTLY-h811" and "open_gapps-arm64-6.0-nano-201605xx", all back to back. And then installed manual everything as needed Gmail, Maps, etc.
Everything worked great for about 2-days, until then next morning my screen locked up. Then the phone rebooted. After the reboot, it lasted for about 10-15 seconds in CM13 and rebooted again manually. Continued to reboot over and over, till it then stopped booting with CM13. I thought that maybe I needed to install the latest CM13 zip file, but found I couldn't get into recovery. The first reboot screen, showing "Bootloader State: Bootloader unlocked? and the LG logo would be in a loop. During that time, I could feel the phone getting hotter and hotter.
Sometimes, the phone would boot up into CM fully and last for 5 to 10 minutes. Then reboot again and stay in the first reboot screen.
I managed to get into TWRP recovery and thought that putting back the stock MRA58K image would help. During the install in recovery, the phone rebooted! I never thought it could do that. Eventually I got the stock LG back-up up and running, but it didn’t help, and same rebooting occurred.
I'm stuck and out of options. I would like to get the phone BACK TO STOCK and then perform an RMA. I’m afraid that with the BOOTLOADER UNLOCKED that my RMA will be denied and I’m stuck with what I have.
So can the H811's bootloader be re-locked?

PiCASSiMO said:
I'm stuck and confused:
Had a Nexus 4 and 5 for years. Decided to upgrade this past November to the LG G4 (T-Mobile H811)
Got it to root without touching the boot loader.
In came MM and then I had issues of repeating the process.
I came across a solution, to unlock my bootloader. So I did it and managed to get my G4 rooted while running stock LG MM (H81120i).
Everything was running well for several months, but then I started to see erratic behavior. It would heat-up in my pocket for no reason. It would not save pictures. Connections via WiFi and LTE were breaking up. All in all, I wasn't happy and I missed the stock Google interface.
So I've decided to install CM13. Had many issues of getting it to work for several days, which included persistent closings of Google Play services (and many others) and not being able to make/receive calls (it would automatically reboot) After several different attempts, I managed to get it all working. Cleared/Wiped everything off my internal drive, installed the "LG-H81120i-Flashable.COMPLETE" and "cm-13.0-201605xx-NIGHTLY-h811" and "open_gapps-arm64-6.0-nano-201605xx", all back to back. And then installed manual everything as needed Gmail, Maps, etc.
Everything worked great for about 2-days, until then next morning my screen locked up. Then the phone rebooted. After the reboot, it lasted for about 10-15 seconds in CM13 and rebooted again manually. Continued to reboot over and over, till it then stopped booting with CM13. I thought that maybe I needed to install the latest CM13 zip file, but found I couldn't get into recovery. The first reboot screen, showing "Bootloader State: Bootloader unlocked? and the LG logo would be in a loop. During that time, I could feel the phone getting hotter and hotter.
Sometimes, the phone would boot up into CM fully and last for 5 to 10 minutes. Then reboot again and stay in the first reboot screen.
I managed to get into TWRP recovery and thought that putting back the stock MRA58K image would help. During the install in recovery, the phone rebooted! I never thought it could do that. Eventually I got the stock LG back-up up and running, but it didn’t help, and same rebooting occurred.
I'm stuck and out of options. I would like to get the phone BACK TO STOCK and then perform an RMA. I’m afraid that with the BOOTLOADER UNLOCKED that my RMA will be denied and I’m stuck with what I have.
So can the H811's bootloader be re-locked?
Click to expand...
Click to collapse
Since you live in the US your only option is to apply over voltage to the battery terminal and burn the mobo so that it wont even boot up. The exact method is somewhere around here in xda so you should look it up since you have no other choice
Edit: To answer your question: No

sirsomething said:
Since you live in the US your only option is to apply over voltage to the battery terminal and burn the mobo so that it wont even boot up. The exact method is somewhere around here in xda so you should look it up since you have no other choice
Edit: To answer your question: No
Click to expand...
Click to collapse
If I can't re-lock the bootloader, has anyone had the success of returning their phones under warranty? Through T-Mobile?

[REQ] Help: bootloop after 7.1.1 beta OTA and cannot enter recovery mode

I've been watching several threads for the last few days, and have not seen this exact issue. I would greatly appreciate some help.
Device:
- Nexus 5X LGH790 32GB
- Stock bootloader / fastboot
- Never unlocked / rooted / etc.
The only advanced thing I've done is join the beta program a few months ago to get 7.0 early. Got that without any issue.
Issue:
I received the 7.1.1 OTA on the day it came out. Installed with no problems. The next day, the phone just froze in the middle of regular use. After about 15 seconds, it started boot looping to the Google splash screen. I can hold volume-down to enter fastboot, but when I select recovery mode, it just starts looping again. Pretty much all I could do was power it off. I did find out by accident that if I left it looping for long enough, sometimes it actually loaded normally (I even saw beta program warning/notice). But when I tried using it for more than a minute, it would freeze, reboot, and loop again.
What I've already tried:
- I tried using the WugFresh NRT fix softbrick method. I was able to quickly turn on debugging one of the times that I left it to loop. But when NRT sent a reboot the phone, it threw it back into the loop and NRT stopped recognizing the device.
- I tried to follow the unbrick procedure using a TOT file in this thread: http://forum.xda-developers.com/nexus-5x/help/tutorial-how-unbricked-nexus-5x-16gb-t3481766 But even after using LGUP, I still cannot even get into recovery mode.
- I filed a bug in the AOSP here: https://code.google.com/p/android/issues/detail?id=225802.
I'm at a loss here. On another thread, a member suggested this type of loop was a hardware/solder joint issue. I suppose that's possible... but man, what a coincidence that would be! Just now after the OTA the hardware fails? Any other thoughts? I'm pretty new to a lot of the terms/methods here, so maybe I missed something.
Thanks, DCK.

Update: I tried using LGUP again. The phone still gets stuck on the Google screen then boot loops.
Now, however, I am able to get into recovery mode consistently. Other threads have suggested doing an OTA sideload at this point. But I cannot seem to get my device recognized. The NRT shows no ADB devices connected. So I'm still stuck. Is there another way to try sideload?

DC_Knight said:
Update: I tried using LGUP again. The phone still gets stuck on the Google screen then boot loops.
Now, however, I am able to get into recovery mode consistently. Other threads have suggested doing an OTA sideload at this point. But I cannot seem to get my device recognized. The NRT shows no ADB devices connected. So I'm still stuck. Is there another way to try sideload?
Click to expand...
Click to collapse
Try fastboot/bootloader mode and fastboot flash the OTA manually.

Update 2: Seems like all the other things I tried over the last few days have caused various unofficial USB drivers to be installed. I've tried uninstalling most of them. I downloaded the google USB driver from latest SDK. But my 5X is still recognized as a Kedacom device when it is sitting at FastBoot.
However, I must have made some progress because I was able to start the sideload process. Unfortunately, I am now stuck on yet another error. The phone hangs at "verifying update package" and then after about 2 minutes... it reboots itself and starts looping again!
I thought I had it. So close. Now I want to throw the phone. Going to sleep, but would be grateful for any other suggestions in the morning.
- DCK

use nrt to erase all partitions, then download 7.1 factory image, unzip and flash one by one the partitions.

DC_Knight said:
...
I'm at a loss here. On another thread, a member suggested this type of loop was a hardware/solder joint issue. I suppose that's possible... but man, what a coincidence that would be! Just now after the OTA the hardware fails? Any other thoughts? I'm pretty new to a lot of the terms/methods here, so maybe I missed something.
Thanks, DCK.
Click to expand...
Click to collapse
Sounds like the boot loop issue many people have been having (the hardware/solder issue). It happened to me a few weeks ago after upgrading to Android 7.0. I got a replacement device from google.

If you're bootloader is locked, NRT or any other method to flash the factory image is not going to work. The only suggestion I have is to un-enroll in the beta program and hope your device will boot long enough to flash the ota Google will send the device to get back to 7.0. Note, this will wipe your device.
Sent from my Nexus 9 using XDA-Developers mobile app

Same problem here. It can't be recognized after I reboot to fastboot. So I can't flash anything.

If the device isn't recognized try this http://forum.xda-developers.com/showpost.php?p=69273414&postcount=33. It's worked for a few of us with the same problem
Sent from my Nexus 9 using XDA-Developers mobile app

Enter stock recovery then flash the full ota via adb sideload

Stuck with Fastboot but no recovery, no boot

Hi All,
My Nexus 5x 32 GB phone suddenly died on me last night. The situation as of now:
1. Cannot boot normally. Shows Google logo and everything goes dark.
2. Can boot into Fastboot with holding down power and volume down buttons
3. But not able to go into recovery. When I select Recovery in Fastboot mode, it just tries to reboot and the screen stays dark. Nothing happens.
4. The bootloader is locked. I think OEM protection in Developer tools is on, so not able to unlock bootloader through Fastboot commands.
What an I do?? Factory reset would be great, if option is there.
Please help!! Thanks.

Try to flash Factory image by command adb and fastboot if your pc recognized your nexus 5x
unlock oem if necessary After

Funny enough, I've got a very similar issue
I can boot into recovery though, but there's a catch, and I think it applies to everything past boot, the phone freezes and restarts after like 3-5 seconds.
I can't boot to system, as it takes way too long to boot up, but I can only see the first panel of the recovery before it dies and restarts.
I have flash official images, and even TWRP recovery to see what I can do, but this doesn't work out in the long run, as the issues are ever persistent

Thanks for the quick replies!
Tried everything, including Nexus toolkit... But nothing worked. So I finally took it to service center as its still in warranty. They said the problem is hardware related and it might have happened because of recent update. They also said they have been getting lots of phones with this problem. So they they are replacing the motherboard free of cost. Wish they could have given a new phone
Once again, thanks all!

Dude that's wild, this same exact issue literally happened to me 2 weeks ago while I was on tour. Was on 7.1.1 (Pixel ROM to be specific) and my 5X just died on me out of nowhere. Absolutely the same things happening here, would boot up, go black, and then start bootlooping. Could access fastboot, but I couldn't get into recovery. Called Google and got a replacement because it was definitely hardware failure and I was still under warranty (just a few days past a whole year). I wonder if the new 7.1 betas are breaking peoples' phones
Sent from my Nexus 5X using Tapatalk

LG said if I have rooted my device, then it's not covered by warranty, and a 200-300 dollar (AUD) repair fee
I wonder if I can get this done free of cost though, I'm not the first person to have used this phone

Scratch. said:
LG said if I have rooted my device, then it's not covered by warranty, and a 200-300 dollar (AUD) repair fee
I wonder if I can get this done free of cost though, I'm not the first person to have used this phone
Click to expand...
Click to collapse
Have you tried flashing the stock images? If you can get to fastboot, you can flash the stock image and unroot your phone. You should also then be able to lock your bootloader (if it is unlocked) and then do your warranty at that point.

I only have been using stock images
root is not a problem, as itis indeed not rooted.
no matter what image you would boot, fhe system will crash after a few seconds, freezeframing whatever on display, be it the recovery icon, or the beggining of the boot animation

so people saying android 7.1.1 brooking devices, so will that be safe to upgrade the phone from 7.0 to 7.1 .1 when stable release will be available ?

Scratch. said:
I only have been using stock images
root is not a problem, as itis indeed not rooted.
no matter what image you would boot, fhe system will crash after a few seconds, freezeframing whatever on display, be it the recovery icon, or the beggining of the boot animation
Click to expand...
Click to collapse
Sounds like the hardware bootloop issue that has been hitting 5x devices hard lately. Mine started looping last week and I had to send it in.
Are you still within your 1 year manufacturer's warranty? If so, you can call LG and report the issue to them. Your device may get fixed, but it was also reported Thursday that LG has started issuing full refunds because they ran out of the needed part.

The company have started offering refunds
https://www.neowin.net/news/lg-to-issue-full-refunds-to-customers-with-faulty-nexus-5x-handsets

Nexus 5X Suddenly freeze and stuck in boot loop

So while i was browsing around with Firefox on my 1 year old Nexus 5X, it suddenly froze and after about 20 secs automatically reboots.
After it shows the google boot logo for about 10 seconds it reboots again in a loop.
Bootloader is unlocked, its rooted and Cyanogenmod is installed. This worked fine for about 1 year. I havent done any updates since this CM install 1 year ago.
I can get into fastboot by pressing power and volume down. I can stay there forever but if I choose anything else from there, it goes into the reboot cycle again.
So I can not get into recovery mode from fastboot because it reboots before it gets there.
I can sometimes get into download mode by pressing power and volume up but after a few seconds it again reboots from there.
Is there any way to at least save my data? I do have some very important account data on it.
I assume from fastboot mode alone you cant save anything or is there a trick?
Thanks for any help!

sounds very similar to my situation, bought mine about a year ago as well, except I was running stock 7.1.2

It should be easy to save the phone, but for the data - that's going to be trickier.
As long as you have fastboot you can always just flash it back to stock but that will wipe your data.
So you could try to to:
fastboot erase cache and fastboot erase recovery and then reflash recovery and see if you can get into it now.
Once in recovery you should have adb access if you have the correct drivers installed and you can flash a full OTA image in ADB which will reflash every partition, but not wipe your data.
For both methods read this: https://developers.google.com/android/images
Once you have adb you could also just pull the entire content of your data partition. The question is if and how that account data is stored and if you could get it back that way.
If you really need that app data I would try to get the OS working by flashing the OTA image in adb, then reinstall the app and hope your account data is still there...
And then look into backup options. It's pretty risky to have important data not backed up or duplicated somewhere else on a mobile device that could be lost or stolen any second...

It sounds like the bootloop problem, its a problem that many people are facing

berndblb said:
It should be easy to save the phone, but for the data - that's going to be trickier.
As long as you have fastboot you can always just flash it back to stock but that will wipe your data.
So you could try to to:
fastboot erase cache and fastboot erase recovery and then reflash recovery and see if you can get into it now.
Once in recovery you should have adb access if you have the correct drivers installed and you can flash a full OTA image in ADB which will reflash every partition, but not wipe your data.
For both methods read this: https://developers.google.com/android/images
Once you have adb you could also just pull the entire content of your data partition. The question is if and how that account data is stored and if you could get it back that way.
If you really need that app data I would try to get the OS working by flashing the OTA image in adb, then reinstall the app and hope your account data is still there...
And then look into backup options. It's pretty risky to have important data not backed up or duplicated somewhere else on a mobile device that could be lost or stolen any second...
Click to expand...
Click to collapse
I dont know about the OP, but my 5X will not get into fastboot, no matter what option I pick, I see the Google screen then it goes black and back to the Google screen and then is unresponsive for hours

I'm having the same issue as of this morning. I find it a little suspicious that it happened on the same day that my billing restarted and they had just updated the app a few days ago...
But I am unable to get to recovery mode either. Just shows the Google logo and reboots.

It's happening to me right now, the exact same thing, guys, this is not a coincidence

Another one here, started Friday night 3 days ago. Really weird that all of a sudden so many 5X users are experiencing the same problem.

mine just started this today, but after about ten reboots it finally started. Its almost like someone took control of the phone to install something remotely... weird
Sent from my Nexus 5X using Tapatalk

I'm having the exact same issue. Was watching a youtube video and suddenly the screen froze and my phone rebooted. When i tried to get into the recovery i still only got the google logo and a reboot. Fortunately i have my bootloader unlocked. I was able to reflash android and it worked again. After an hour or two the same started to happen again. Extremely frustrating.
Best thing you can do is flash just the recovery and try to get your files out that way.

so even until now many Nexus 5x still got bootloop? nothing to fix it still?
planning to get an used Nexus 5x and afraid also got this bootloop problem, should I or shoudn't I get it?
after reading so much bootloop stories, seems the timing to bootloop is just matter of time? on how much the phone is used? heavy use got bootloop first and lighter use got bootloop last but still get it sooner or later?

I will not buy it
DON2003 said:
so even until now many Nexus 5x still got bootloop? nothing to fix it still?
planning to get an used Nexus 5x and afraid also got this bootloop problem, should I or shoudn't I get it?
after reading so much bootloop stories, seems the timing to bootloop is just matter of time? on how much the phone is used? heavy use got bootloop first and lighter use got bootloop last but still get it sooner or later?
Click to expand...
Click to collapse
Two days ago I was facing the same problem, I managed to reload the stock rom and relock the bootloader so I can claim the warranty. But even though they replace me the phone I am pretty sure that sooner or later you will face this problem. This is an amazing phone and for the time I buy it, I believe was a smart choice, now I believe you can find something at same range price with even better specs.

I am facing the exact same issue. I was watching a Youtube video when the phone suddenly froze and shutdown itself. Then impossible to boot again. Sometimes I can boot to fastboot (after few hours without touching the phone or 20 min in the freezer). I tried to flash factory images (https://developers.google.com/android/images) but it does not fix it.
Has anyone been able to fix this? I don't think it's a hardware issue as I replaced the screen (the last one had a small crack on it) as well as the battery...

Look in the general subfourm for BLOD. https://forum.xda-developers.com/showthread.php?t=3683926
Sent from my [device_name] using XDA-Developers Legacy app