Phone won't boot after nandroid data restore - Nexus 6P Q&A, Help & Troubleshooting

Hi guys, I've got a problem with my phone. I restored a data nandroid and have tried multiple different ones and these backups have previously worked but my phone boots up and the screen goes black and that's it. Please help me. If I flash a rom without restoring the data then it boots fine. The nandroid shouldn't be causing an issue as I've used these backups with no problems previously. If anyone can help me that would be greatly appreciated. Thank you!

DEVILOPS 007 said:
Hi guys, I've got a problem with my phone. I restored a data nandroid and have tried multiple different ones and these backups have previously worked but my phone boots up and the screen goes black and that's it. Please help me. If I flash a rom without restoring the data then it boots fine. The nandroid shouldn't be causing an issue as I've used these backups with no problems previously. If anyone can help me that would be greatly appreciated. Thank you!
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I've honestly never successfully restored any Nandroid backup on the 6P and don't even bother making them anymore. I think I read that there was a problem restoring backups on the latest version of TWRP. You should probably check out their XDA thread.

jhs39 said:
I've honestly never successfully restored any Nandroid backup on the 6P and don't even bother making them anymore. I think I read that there was a problem restoring backups on the latest version of TWRP. You should probably check out their XDA thread.
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Okay thanks, so if the most recent versions have problems would I b able to restore on older versions?

DEVILOPS 007 said:
Okay thanks, so if the most recent versions have problems would I b able to restore on older versions?
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The latest build 3.1.0.0 works perfectly backing up and restoring backups made with that same version. Older builds certainly have issues, so you may not be able to properly restore a backup made with an earlier version. I think the greater question is what happens when you flash stock? I'd be wondering about the display issue myself.

v12xke said:
The latest build 3.1.0.0 works perfectly backing up and restoring backups made with that same version. Older builds certainly have issues, so you may not be able to properly restore a backup made with an earlier version. I think the greater question is what happens when you flash stock? I'd be wondering about the display issue myself.
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Click to collapse
There are no problems with stock. I flash my custom rom or stock but the problem only happens after restoring data and rebooting. I made the backup on the same version of TWRP I am currently on trying to restore it so I don't know what the issue is.

I have multiple backups that work perfectly fine on both the official and the f2fs modified builds. Like mentioned above, older versions had issues. Are you trying to restore on a different version of TWRP than the backup was created on? That is sometimes an issue also, though I'm not familiar with that issue on the 6P. Try to figure out what is different now than when the same backups we successful.
Sent from my Nexus 6P using XDA-Developers Legacy app

CyberpodS2 said:
I have multiple backups that work perfectly fine on both the official and the f2fs modified builds. Like mentioned above, older versions had issues. Are you trying to restore on a different version of TWRP than the backup was created on? That is sometimes an issue also, though I'm not familiar with that issue on the 6P. Try to figure out what is different now than when the same backups we successful.
Sent from my Nexus 6P using XDA-Developers Legacy app
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Click to collapse
I made the backup on unofficial twrp 3.1.0-7 f2fs and tried restoring on it too. The backup has worked fine on this same version of TWRP before but isn't now. The backup restores fine but the screen just goes black after it boots up.

DEVILOPS 007 said:
I made the backup on unofficial twrp 3.1.0-7 f2fs and tried restoring on it too. The backup has worked fine on this same version of TWRP before but isn't now. The backup restores fine but the screen just goes black after it boots up.
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Did you try clearing art/dalvik cache and cache in TWRP advanced wipe maybe?
Good luck...

5.1 said:
Did you try clearing art/dalvik cache and cache in TWRP advanced wipe maybe?
Good luck...
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Click to collapse
I even formatted my phone

DEVILOPS 007 said:
I even formatted my phone
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Thought it could be some old cache between ROM installs that could cause issue...
Good luck...

The bug I read about is apparently on version 3.0.2-1 and not on the latest build and involves a problem restoring the EFS partition, which probably doesn't apply to you. Sorry for the bad info. But I've made Nandroid backups on various builds of TWRP and never restored one successfully --and I've been rooting my phones and flashing custom Roms for years. The 6P is the only phone I've ever had that problem on.

jhs39 said:
The bug I read about is apparently on version 3.0.2-1 and not on the latest build and involves a problem restoring the EFS partition, which probably doesn't apply to you. Sorry for the bad info. But I've made Nandroid backups on various builds of TWRP and never restored one successfully --and I've been rooting my phones and flashing custom Roms for years. The 6P is the only phone I've ever had that problem on.
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Click to collapse
Try not to restore the vendor partition. I've seen a year ago it would cause problem.

Thanks for the info everyone. I really appreciate it. I couldn't work this out and just bit the bullet and used nandroid manager to restore apps which sucks but everything seems fine now.

Related

Backup restore problem

Hi all... tonight I decided to try the Samurai kernel. Unfortunately, it boot-looped on me. No big deal I figured, I did a full nandroid before in ACS's CWM, so I'll just restore. Unortunately, doing so isn't working: all of my apps, data and settings are gone! It basically looks stock (although, interestingly, all the Sprint bloat I had manually removed before still seems to be gone, so the restore worked to a degree)... I've restored backups before and never had a problem so I'm guessing the kernel is somehow the culprit, but I think that got restored from the backup too so I don't know what's going on. I'm stock EI22 by the way.
Can anyone help me? I'm pretty frustrated at the moment.
Thanks,
Frank
Try restoring an older backup. If that works you can attempt an advanced restore data only from your recent backup to see if it was something in your setup.
Sent from my SPH-D700 using XDA App
That was a thought I had too... I tried TWO older backups that I still had, same problem. I also tried a factory reset and then a restore (in theory it shouldn't make any difference to factory wipe first, and sure enough it didn't, but figured it was worth a shot).
My only other thought is maybe if I odin back to stock, root & install recovery and then try the restore again... kind of a shot in the dark, really shouldn't matter, but maybe.
Did you clear cache and dalvik before flashing the new kernel? I wonder if ACS is the issue and if trying CWM 5 might help.
DroidApprentice said:
Did you clear cache and dalvik before flashing the new kernel? I wonder if ACS is the issue and if trying CWM 5 might help.
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Click to collapse
I was thinking the same thing D. The only other thing I can think of is bad reads from the sd card.

[Q] Nandroi restore /data error

Hi,
I have a problem with my cwm. I made a backup with cwm without any error.
But when I tried to restore it I got an error at the point of data restore.
As a result, I miss most of the app data.
I have no idea why I get an error. Checksum is fine. I did the backup with another version of cwm than I tried the restore. But that shouldn't be a problem, right?
Please help me. I need my app data.
Thanks in advance.
Log file is not saved by the way.
Solved
Even though nobody seems to be interested in my problem, i wanted to post the solution. Maybe somedy someone will need it.
The problem indeed was the different versions of cwm.
I did the backup with 6.0.2.3 non touch cwm and then i updated to 6.0.3.0 non touch cwm.
Stupid, i know. I had no img of the old one at first. SO i tried many things. I flashed the 6.0.2.3 touch cwm which didn'n work either.
But i found the image of the 6.0.2.3 non tocuh cwm on my phones sd partition. I don't know why it was stored there, it seems cwm backups a image everytime you backup a rom.
Doesn't matter, i flashed it and bam.... it worked.
I think its kind of a bug that an backup from a further version cannot be restored with a new one.
And i think its no good that the developer doesn't provide the old versions on his HP.
For the future I and you as well will know.
Thanks
get twrp, seriously. cwm simply cant keep up anymore unless they make a super effort to bring it up to date again.
Moles himself is answering me. What an honor. I'm a big fan of PA ... I use nothing else.
I already replaced cwm with twrp. I read a few things on the web last night. Many users prefer twrp. I just didn't know that it makes any difference until now.
Thanks and kepp PA as innovative as it is

[Help] TWRP reboots during restore

TWRP 2.5.0.0 reboots my device while performing a restore. It usually happens during the DATA phase. I've tried two different restores and the same thing happens. Thanks
If you need more detail, i'll do my best to provide.
sorryihaveaids said:
TWRP 2.5.0.0 reboots my device while performing a restore. It usually happens during the DATA phase. I've tried two different restores and the same thing happens. Thanks
If you need more detail, i'll do my best to provide.
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I've actually been getting random freezes and reboots in TWRP myself, in the last 2 weeks or so, since I've gone flash-crazy. Have you been flashing a lot?
dibblebill said:
I've actually been getting random freezes and reboots in TWRP myself, in the last 2 weeks or so, since I've gone flash-crazy. Have you been flashing a lot?
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I wouldn't say flash-crazy, but i've tried two different roms in the past two days. It's not really freezing either. It will just start to restore, make it half way through, and reboot. My rom will be restored but none of my data.
sorryihaveaids said:
TWRP 2.5.0.0 reboots my device while performing a restore. It usually happens during the DATA phase. I've tried two different restores and the same thing happens. Thanks
If you need more detail, i'll do my best to provide.
Click to expand...
Click to collapse
Yep, seems to be happening a lot. One suggestion was to revert to 2.4 or even 2.3.3.0. I tried that, and thought the problem was solved, but then it happened again, so I figured what the hell, I'll go back to 2.5.
You're right, it always happens during the data restore, but so far the second attempt at restoring always succeeds, so it's more annoying than anything. I can't recall it ever happening on my phone, though, so I wonder if it's a device issue. Also my phone is running JB 4.1.2 and my N10 is on 4.2.2.
Sent from my Nexus 10 using Tapatalk HD
Ive noticed this problem as well. Hopefully it will be fixed in later releases.
brGabriel said:
Ive noticed this problem as well. Hopefully it will be fixed in later releases.
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So yesterday I went to flash a new ROM and TWRP froze immediately after doing a Factory Reset Wipe. Nexus kept bootlooping and then getting stuck on the TEAMWIN screen. Was able to get into the bootloader and flash the stock image and unroot through the Nexus Toolkit. I lost all my data though. So my question is, if you can get to bootloader mode and the toolkit recognizes it in bootloader mode, can you recover data without having to do what I did and wipe the device? For future reference sake. God I need to get better about backing up my data on my PC.
Anyone found the solution to this? I am not able to restore my data ( During the resotre in TWRP it goes blackscreen and then just reboots. I've triel like 10 times already..
ky3bmu4 said:
Anyone found the solution to this? I am not able to restore my data ( During the resotre in TWRP it goes blackscreen and then just reboots. I've triel like 10 times already..
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I had the same issue. Its most likely a corrupt backup and can't be solved. But if you've successfully restored that backup before try reflashing the recovery. Just a tip that somebody else gave me. Use philz cwm touch recovery. It has no issues and more reliable then other recoveries.
Sent from my Nexus 10 using xda app-developers app
abdel12345 said:
I had the same issue. Its most likely a corrupt backup and can't be solved. But if you've successfully restored that backup before try reflashing the recovery. Just a tip that somebody else gave me. Use philz cwm touch recovery. It has no issues and more reliable then other recoveries.
Sent from my Nexus 10 using xda app-developers app
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Click to collapse
Yes, i'm thinking the same. Maybe it also because the backup was huge (maybe like 4 gb).
But I am not really sure if it is corrupted because the system restores fine and data do not, but it fails in different places, i.e. it may reboot in 30 seconds and may reboot in 2 minutes...

Issues restoring backup

Mostly just out of curiosity I flashed a new ROM this weekend. I decided I like pure nexus better so I flashed my backup from twrp but wound up in bootloop. Even though I've never had issues restoring ROMs with MANY other devices, I still followed the directions for backing it up very carefully. I also did a full wipe before trying to restore it. In fact after the 3rd attempt I accidentally wiped internal storage. So that wasn't the issue.
Only thing I can figure is I was using elemental kernel when I made the backup so maybe that was the problem? I don't see why it would matter (or how that would work--removing the kernel, make backup, flash kernel again...) but I'm really stumped on how I went wrong.
KLit75 said:
Mostly just out of curiosity I flashed a new ROM this weekend. I decided I like pure nexus better so I flashed my backup from twrp but wound up in bootloop. Even though I've never had issues restoring ROMs with MANY other devices, I still followed the directions for backing it up very carefully. I also did a full wipe before trying to restore it. In fact after the 3rd attempt I accidentally wiped internal storage. So that wasn't the issue.
Only thing I can figure is I was using elemental kernel when I made the backup so maybe that was the problem? I don't see why it would matter (or how that would work--removing the kernel, make backup, flash kernel again...) but I'm really stumped on how I went wrong.
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What partitions did you backup/restore?
Heisenberg said:
What partitions did you backup/restore?
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Well Ive got the right guy to talk to Pretty sure it was what you suggested (system/data/boot/vendor boxes)
But I don't recall if I checked everyone to restore. However, I did store the backup on my computer. Even though I've since got everything back I can try again to restore it. But can you just confirm which I should check when I restore it?
I'll be certain to pay closer attention next time. Its just that this is one thing I had never struggled with. Thanks
KLit75 said:
Well Ive got the right guy to talk to Pretty sure it was what you suggested (system/data/boot/vendor boxes)
But I don't recall if I checked everyone to restore. However, I did store the backup on my computer. Even though I've since got everything back I can try again to restore it. But can you just confirm which I should check when I restore it?
I'll be certain to pay closer attention next time. Its just that this is one thing I had never struggled with. Thanks
Click to expand...
Click to collapse
I recommend restoring system, data, boot, and vendor. Just make sure you're not restoring system image or vendor image.
Heisenberg said:
I recommend restoring system, data, boot, and vendor. Just make sure you're not restoring system image or vendor image.
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Click to collapse
So simple. Thanks a lot!
KLit75 said:
So simple. Thanks a lot!
Click to expand...
Click to collapse
Let me know if you get it booting.
Heisenberg said:
Let me know if you get it booting.
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Click to collapse
Well yes. Thanks again. However, I've got something funky going on. Pin pointing is hard but yea the backup restored. Then I tweaked elemental kernel (nothing crazy, used stable profiles) maybe it was that and an xposed mod (thinking ifont because its one I only just started using lt recently). Anyway when I rebooted to install drivers for viper I got stuck in bootloop. This time I couldn't restore my backup. So I factory reset and reflashed pure nexus. Due to the time I couldn't try and restore the backup again but will try tonight. If I wasn't so hasty I could've deleted the modules list in twrp then maybe booted up but I'm not 100% it has anything to do with xposed. One other factor, it was using dark stock theme.
EVERYTHING I mentioned I've done/run on this ROM without issues but there's a combination of things that's causing the bootloop I think.

TWRP Not Restoring All Apps When I Do a Restore from Backup (H910)

Hi everyone.
I'm not sure if this is the right subforum to ask, so I apologize if I should have posted this elsewhere.
This is for the unlocked LG V20 H910.
I flashed TWRP using the Dirty Santa method. I did it a couple of times with version 3.0.2-1, and a couple of times the version from 10-8-2018 (it doesn't show which version it is on the file itself). In both cases, when I've tried to restore backups, many apps disappear and are no longer installed. I've tried it on 10r, 20h, and Super Rom 8.3.18. This happened with apps which I restored with Titanium Backup; ones I've restored from apks; and ones I've downloaded from Google Play. It also happened with and without being rooted. I did it all those different ways on each rom which was installed.
Does anyone know if there is a fix for it?
Thanks for any help
are you sure already check the DATA?
(image attached is just an ilustration, its not screenshot of my twrp)
jeremyn87 said:
Hi everyone.
. This happened with apps which I restored with Titanium Backup; ones I've restored from apks; and ones I've downloaded from Google Play. It also happened with and without being rooted. I did it all those different ways on each rom which was installed.
Does anyone know if there is a fix for it?
Thanks for any help
Click to expand...
Click to collapse
try to check where TB put when restoring apk. maybe TB put on ext-sd so it not included when you creating NAND backup from TWRP. as far as i know, making NAND backup from twrp is just backing up the apk that installed or stored on internal storage. CMIIW
gandyprakoso said:
are you sure already check the DATA?
(image attached is just an ilustration, its not screenshot of my twrp)
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Click to collapse
Yeah, I checked it. The only thing I didn't check was one option which is in beta mode and requires 50 gigs of free space. But everything else was checked. The 10r backups were around 15 gigs, and the Super Rom ones were around 13 gigs.
gandyprakoso said:
try to check where TB put when restoring apk. maybe TB put on ext-sd so it not included when you creating NAND backup from TWRP. as far as i know, making NAND backup from twrp is just backing up the apk that installed or stored on internal storage. CMIIW
Click to expand...
Click to collapse
That's why I tried different ways of installing it. I was worried that some got in my SD card after the first time I noticed apps weren't restored, but I tried reinstalling and backing up without the SD card and the same thing happened.
Im wondering if they're being backed up but not restored for some reason?
Thank you for your responses!
jeremyn87 said:
Yeah, I checked it. The only thing I didn't check was one option which is in beta mode and requires 50 gigs of free space. But everything else was checked. The 10r backups were around 15 gigs, and the Super Rom ones were around 13 gigs.
That's why I tried different ways of installing it. I was worried that some got in my SD card after the first time I noticed apps weren't restored, but I tried reinstalling and backing up without the SD card and the same thing happened.
Im wondering if they're being backed up but not restored for some reason?
Thank you for your responses!
Click to expand...
Click to collapse
hmm.. try to update TWRP into latest version, im using ver 3.2.3-4 here. im already using this version for backing up many roms and never meet any problem at all..
you can download it from here (TWRP ver. 3.2.3-4 for H910)
https://androidfilehost.com/?fid=11410932744536982443
that link i copied from this thread:
https://forum.xda-developers.com/v20/development/recovery-twrp-3-2-1-0-t3720239
I just checked, and that's the version I'm using
Help
Same happened with me, i also restore backup from twrp and some apps are missing
jeremyn87 said:
Hi everyone.
I'm not sure if this is the right subforum to ask, so I apologize if I should have posted this elsewhere.
This is for the unlocked LG V20 H910.
I flashed TWRP using the Dirty Santa method. I did it a couple of times with version 3.0.2-1, and a couple of times the version from 10-8-2018 (it doesn't show which version it is on the file itself). In both cases, when I've tried to restore backups, many apps disappear and are no longer installed. I've tried it on 10r, 20h, and Super Rom 8.3.18. This happened with apps which I restored with Titanium Backup; ones I've restored from apks; and ones I've downloaded from Google Play. It also happened with and without being rooted. I did it all those different ways on each rom which was installed.
Does anyone know if there is a fix for it?
Thanks for any help
Click to expand...
Click to collapse
Did you install Zacharee1's Mod Control App or install of Lu**y P****r with certain switches checked? These caused those issues for me before upon restore.
You might want to edit your post as it contains the app whose name can never be spoken on xda
Sent from my LG-H910 using XDA Labs
cnjax said:
You might want to edit your post as it contains the app whose name can never be spoken on xda
Sent from my LG-H910 using XDA Labs
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Click to collapse
There ...I know what one you ment. Was just trying to help.

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