Not able to boot any ROM - Nexus 6P Q&A, Help & Troubleshooting

Hi,
Coming from PureNexus, I wanted to give CM13 a try. Made a nandroid backup so none of my data is lost, and put that backup on pc. I installed CM13 which went fine. It stopped at the CM booting animation and did not go further, so I cleanflashed Purenexus to restore my backup later on. Now PureNexus won't boot either. I'm out of ideas to try, and I want to get my phone back up and running ASAP.
Can anyone help me with this issue?

Riyge said:
Can anyone help me with this issue?
Click to expand...
Click to collapse
When you clean flashed, did you also wipe system? If you did and you're still hung at boot, your best bet would be to flash the factory images via fastboot and start fresh.

Riyge said:
Hi,
Coming from PureNexus, I wanted to give CM13 a try. Made a nandroid backup so none of my data is lost, and put that backup on pc. I installed CM13 which went fine. It stopped at the CM booting animation and did not go further, so I cleanflashed Purenexus to restore my backup later on. Now PureNexus won't boot either. I'm out of ideas to try, and I want to get my phone back up and running ASAP.
Can anyone help me with this issue?
Click to expand...
Click to collapse
Are you wiping properly (system, data, cache, dalvik cache) before installing a ROM? Are you making sure you flash the appropriate vendor image after flashing the ROM? When you made your backup which options did you check? And which options are you restoring?

Heisenberg said:
Are you wiping properly (system, data, cache, dalvik cache) before installing a ROM? Are you making sure you flash the appropriate vendor image after flashing the ROM? When you made your backup which options did you check? And which options are you restoring?
Click to expand...
Click to collapse
When I try to wipe, it's only wiping cache for some reason. My backup consists of everything except cache.

Riyge said:
When I try to wipe, it's only wiping cache for some reason. My backup consists of everything except cache.
Click to expand...
Click to collapse
What do you mean it's only wiping cache? Explain to me how you're doing the wipe. Also, when creating a backup (and restoring it) you should only be selecting system, data, boot, and vendor.
PS. You didn't answer my question about whether you're flashing the vendor after flashing the ROM. If you want help you need to answer the questions that are asked.

Heisenberg said:
What do you mean it's only wiping cache? Explain to me how you're doing the wipe. Also, when creating a backup (and restoring it) you should only be selecting system, data, boot, and vendor.
Click to expand...
Click to collapse
I'll keep that in mind. When I boot up TRWP, I wiped system, dalvik, data, internal storage and cache. After that I pushed CM13 through adb. That's where the problems started.
EDIT: I flashed the most recent vendor after I flashed the ROM.

Riyge said:
I'll keep that in mind. When I boot up TRWP, I wiped system, dalvik, data, internal storage and cache. After that I pushed CM13 through adb. That's where the problems started.
EDIT: I flashed the most recent vendor after I flashed the ROM.
Click to expand...
Click to collapse
Ok, you definitely don't need to wipe internal storage before flashing so don't worry about that part. Only system, data, cache, and dalvik cache. You said before only cache was being wiped, can you please elaborate on that?
Are you sure the ROM zip didn't become corrupt during the download? Did you check the MD5 to ensure that it didn't? That could be what's causing your problems. Also, what gapps are you flashing?
If you want to go back to Pure Nexus just to get your phone working you can just restore that backup, just make sure you only restore system, data, boot, and vendor.

Heisenberg said:
Ok, you definitely don't need to wipe internal storage before flashing so don't worry about that part. Only system, data, cache, and dalvik cache. You said before only cache was being wiped, can you please elaborate on that?
Are you sure the ROM zip didn't become corrupt during the download? Did you check the MD5 to ensure that it didn't? That could be what's causing your problems. Also, what gapps are you flashing?
If you want to go back to Pure Nexus just to get your phone working you can just restore that backup, just make sure you only restore system, data, boot, and vendor.
Click to expand...
Click to collapse
It won't wipe anything other than cache, no matter what I'm trying to do. Now when I'm trying to push a ROM through adb, I can install it but it won't boot.

Riyge said:
It won't wipe anything other than cache, no matter what I'm trying to do. Now when I'm trying to push a ROM through adb, I can install it but it won't boot.
Click to expand...
Click to collapse
I'm trying to help you here but if you keep failing to answer my questions it's impossible for me to do so. At this point I can only think that it's user error, I'd flash the factory images to return to stock and start fresh. I have detailed instructions in my guide:
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928

Heisenberg said:
I'm trying to help you here but if you keep failing to answer my questions it's impossible for me to do so. At this point I can only think that it's user error, I'd flash the factory images to return to stock and start fresh. I have detailed instructions in my guide:
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Click to expand...
Click to collapse
I found your guide by googling, thanks for making that! Flashing the factory image worked, and I succesfully restored my backup. The only problem left is that it won't accept my pattern lock. I have used the same one for years across multiple android devices, so I'm absolutely sure I have the right pattern. Any way to bypass this?

Riyge said:
I found your guide by googling, thanks for making that! Flashing the factory image worked, and I succesfully restored my backup. The only problem left is that it won't accept my pattern lock. I have used the same one for years across multiple android devices, so I'm absolutely sure I have the right pattern. Any way to bypass this?
Click to expand...
Click to collapse
You need to remove all security before making a backup because the security information is encrypted and doesn't get backed up or restored properly. You can delete some files using TWRP (see section 3 of my guide) in order to remove the security so you can get into Android. This will cause problems with Smart Lock though.

Heisenberg said:
You need to remove all security before making a backup because the security information is encrypted and doesn't get backed up or restored properly. You can delete some files using TWRP (see section 3 of my guide) in order to remove the security so you can get into Android. This will cause problems with Smart Lock though.
Click to expand...
Click to collapse
Tried that, fixed my phone. Thanks so much! Is it possible to restore these functions or should I clean flash to get it?

Riyge said:
Tried that, fixed my phone. Thanks so much! Is it possible to restore these functions or should I clean flash to get it?
Click to expand...
Click to collapse
I'd be clean flashing.

Related

Kernel troubles

I just installed a new kernel, and it caused a boot loop. How can I go back to my old stock kernel without using the RUU, because if use that, i'll lose my root :/
Did you clear your cache and dalvik cache before installing ?
No, was i supposed to? :/ sorry if i missed directions, i was pretty careless about this.
dhMassacre said:
No, was i supposed to? :/ sorry if i missed directions, i was pretty careless about this.
Click to expand...
Click to collapse
Yes. Always or you will get FC's and have to Factory Wipe and lose your data. If you have a nand backup, restore it prior to the kernal. ALWAYS backup before installing a kernal. Also they say use Amon RA Recovery. I guess ClockworkMod does not wipe the Dalvik Cache and Cache properly.
Make sure you read stuff over and over when it involves rooting, flashing a radio and kernel. I used the ClockworkMod to wipe the cache and dalvik cache and installed the Kernel and it disabled my usb and sdcard. That is not fun trying to get back working. Make sure you do that.

Twrp Backup Options

Hello, i want to try a different rom out and im wondering what things do i need to back up in twrp just in case something goes wrong or i want to go back. Also if i go back i would like everything to be right as i left off before flashing a new rom. My backup options are Boot, System, System image, Vendor, Vendor Image, Data, Chache, Recovery, EFS
kradkovich said:
Hello, i want to try a different rom out and im wondering what things do i need to back up in twrp just in case something goes wrong or i want to go back. Also if i go back i would like everything to be right as i left off before flashing a new rom. My backup options are Boot, System, System image, Vendor, Vendor Image, Data, Chache, Recovery, EFS
Click to expand...
Click to collapse
By default, you have to backup Boot, System and Data
Braakie said:
By default, you have to backup Boot, System and Data
Click to expand...
Click to collapse
and that will bring me back like i left off if i restore boot, system, and data?
Don't you have to disable all security passwords like pattern lock and fingerprints before making a nandroid or it won't work when you restore? I read that in the How to thread for the 6P. Wondering if this is true or not.
kradkovich said:
Hello, i want to try a different rom out and im wondering what things do i need to back up in twrp just in case something goes wrong or i want to go back. Also if i go back i would like everything to be right as i left off before flashing a new rom. My backup options are Boot, System, System image, Vendor, Vendor Image, Data, Chache, Recovery, EFS
Click to expand...
Click to collapse
See section 4 of my guide.
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Heisenberg said:
See section 4 of my guide.
http://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Click to expand...
Click to collapse
Thank you! Im going to try flashing the BeanStalk 6.02 rom on my 6p tomorrow! Would it possible to restore data on a new rom coming from your old rom? For example: My Nexus 6p is running chroma rom right now, if i back up the data partition can i restore that partition onto my new rom ( BeanStalk 6.02)?
Krunk83 said:
Don't you have to disable all security passwords like pattern lock and fingerprints before making a nandroid or it won't work when you restore? I read that in the How to thread for the 6P. Wondering if this is true or not.
Click to expand...
Click to collapse
Yes that would be true, you would have to disable any type of lockscreen security because it wont let you unlock your phone after restoring.
kradkovich said:
Thank you! Im going to try flashing the BeanStalk 6.02 rom on my 6p tomorrow! Would it possible to restore data on a new rom coming from your old rom? For example: My Nexus 6p is running chroma rom right now, if i back up the data partition can i restore that partition onto my new rom ( BeanStalk 6.02)?
Click to expand...
Click to collapse
Thats not even remotely a clean wipe and would cause nothing but issues.
I would highly recommend not doing that.
Sent from my Nexus 6P, Note 5, Nexus 6 or Note 4
kradkovich said:
Thank you! Im going to try flashing the BeanStalk 6.02 rom on my 6p tomorrow! Would it possible to restore data on a new rom coming from your old rom? For example: My Nexus 6p is running chroma rom right now, if i back up the data partition can i restore that partition onto my new rom ( BeanStalk 6.02)?
Click to expand...
Click to collapse
Noooooooo. When flashing a different ROM you need to clean flash (wipe system, data, cache, dalvik cache).
I have a pattern lock and fingerprints and restore my backup without any problems?
Braakie said:
I have a pattern lock and fingerprints and restore my backup without any problems?
Click to expand...
Click to collapse
Which partitions do you backup and restore?
I don't feel the original question has been fully answered and explained.
The usual answer is: boot, system, data.
In the guide, section 4 that Heisenberg links however, vendor is added to the mix.
Remaining questions:
- Is vendor needed for usual backup together with boot, system and data. If so, why? What does it contain?
- What about the remaining partitions? Vendor image, system image. What do they contain and why do we not need them backed up?
---------- Post added at 01:40 PM ---------- Previous post was at 01:39 PM ----------
Also, yes you can still get back into a backup with fingerprint lock still active. See this post:
http://forum.xda-developers.com/showpost.php?p=64321640&postcount=91
TigerSoul925 said:
I don't feel the original question has been fully answered and explained.
The usual answer is: boot, system, data.
In the guide, section 4 that Heisenberg links however, vendor is added to the mix.
Remaining questions:
- Is vendor needed for usual backup together with boot, system and data. If so, why? What does it contain?
- What about the remaining partitions? Vendor image, system image. What do they contain and why do we not need them backed up?
---------- Post added at 01:40 PM ---------- Previous post was at 01:39 PM ----------
Also, yes you can still get back into a backup with fingerprint lock still active. See this post:
http://forum.xda-developers.com/showpost.php?p=64321640&postcount=91
Click to expand...
Click to collapse
Boot, system and data are fine just as it's always been. I've already done this and restored with no issues. Even with lock screen security. All you do is use file manager in twrp to delete "data/system/locksettings.db". If you know what you are flashing is going to actually write to a partition other than boot or system then yeah, back those up too. Suppose it wouldn't hurt to grab backups of each partition individually and store them on your pc to be on the safe side.
Gizmoe said:
Boot, system and data are fine just as it's always been. I've already done this and restored with no issues. Even with lock screen security. All you do is use file manager in twrp to delete "data/system/locksettings.db". If you know what you are flashing is going to actually write to a partition other than boot or system then yeah, back those up too. Suppose it wouldn't hurt to grab backups of each partition individually and store them on your pc to be on the safe side.
Click to expand...
Click to collapse
The only issue with not backing up and restoring the vendor partition, and the reason I include that in my guide, is if you have themes applied they will survive through the wipe and be carried onto the restore/flash, potentially causing compatibility issues and a failure to boot or a wonky/unusable system after boot.
Gizmoe said:
Boot, system and data are fine just as it's always been. I've already done this and restored with no issues. Even with lock screen security. All you do is use file manager in twrp to delete "data/system/locksettings.db". If you know what you are flashing is going to actually write to a partition other than boot or system then yeah, back those up too. Suppose it wouldn't hurt to grab backups of each partition individually and store them on your pc to be on the safe side.
Click to expand...
Click to collapse
Heisenberg said:
The only issue with not backing up and restoring the vendor partition, and the reason I include that in my guide, is if you have themes applied they will survive through the wipe and be carried onto the restore/flash, potentially causing compatibility issues and a failure to boot or a wonky/unusable system after boot.
Click to expand...
Click to collapse
Oh so that's the reason! Well thanks, then I know what to do! I'll include the vendor partition then just for safety. I already have a complete backup of all partitions except recovery and cache too so I'll just keep that safe somewhere just in case.
Thanks for the replies!
Heisenberg said:
Which partitions do you backup and restore?
Click to expand...
Click to collapse
I backup/restore my boot, data and system partitions to data/media (SDCard)
So what are other options such as system image?
Is it necessary to back it up? I just backed up the default ones
survivor_evil said:
So what are other options such as system image?
Is it necessary to back it up? I just backed up the default ones
Click to expand...
Click to collapse
System.img is just that. An exact image copy of the system image in one chunk. So you would end up with IMG files. It's not necessary to choose the IMG options. Default options for boot, system and data is a complete backup.

Full wipe / clean install problems

Hey guys. I have TWRP 2.8.7.2 installed. I've been using Pure Nexus + Elemental X exclusively since December. This never seemed to be a problem before, but my last few flashes have resulted in sticky data. I go into TWRP, advanced wipe and wipe: DALVIK, System, data, Cache. Then, I delete Android from the internal storage and any other app directories that linger. Then I install the ROM, GApps, and kernel. Then, when I first boot my email shows up in the Google account setup. I thought "maybe it's saved on the sim card." But then I notice that when I reinstall apps, that they retain their data and my user data (for example, I don't even need to log into Runkeeper).
So somehow, despite performing a full wipe and clean install my user data is being saved. I know it's not part of internal storage so wiping that would only result in me having to copy my ROM files, music, photos, etc back over. So, where is this user data being saved and why isn't it being wiped?
Any help would be appreciated.
jserio said:
Hey guys. I have TWRP 2.8.7.2 installed. I've been using Pure Nexus + Elemental X exclusively since December. This never seemed to be a problem before, but my last few flashes have resulted in sticky data. I go into TWRP, advanced wipe and wipe: DALVIK, System, data, Cache. Then, I delete Android from the internal storage and any other app directories that linger. Then I install the ROM, GApps, and kernel. Then, when I first boot my email shows up in the Google account setup. I thought "maybe it's saved on the sim card." But then I notice that when I reinstall apps, that they retain their data and my user data (for example, I don't even need to log into Runkeeper).
So somehow, despite performing a full wipe and clean install my user data is being saved. I know it's not part of internal storage so wiping that would only result in me having to copy my ROM files, music, photos, etc back over. So, where is this user data being saved and why isn't it being wiped?
Any help would be appreciated.
Click to expand...
Click to collapse
I'm not sure why this is happening, it's definitely word. But is there a reason you're wiping like this when updating the ROM? You really don't need to, you can just dirty flash the ROM zip when updating.
Heisenberg said:
I'm not sure why this is happening, it's definitely word. But is there a reason you're wiping like this when updating the ROM? You really don't need to, you can just dirty flash the ROM zip when updating.
Click to expand...
Click to collapse
I don't like to dirty wipe. I guess it's the OCD in me that likes to start clean every time. I wonder if it's a bug in TWRP or something.
jserio said:
I don't like to dirty wipe. I guess it's the OCD in me that likes to start clean every time. I wonder if it's a bug in TWRP or something.
Click to expand...
Click to collapse
I used to do the same thing, until I realised I was just wasting time for no benefit. I don't think it's a TWRP issue, I was using that same build for ages with no problems. You could try updating to the latest TWRP though.
Try with "rm - fr" instead of regular wipe in options, maybe this works.
Are you doing a Factory Reset in TWRP to actually wipe the rom away? You list system, cache, and data (internal storage) but not Factory Reset.
Alternatively, are your apps reinstalling after signing into your account at Setup Wizard?
Sent from my Nexus 5X using Tapatalk
Try wiping system 2x. I had to do this on my S6. After wiping the first time and going back to the advance menu, System would then show up as 2 different partitions, System Read and System Write. I had to wipe the 2 in order to do a clean install. Although this is not the case for the 6P, I have made it a habit to do so. If that fails, you will need to adb the factory image.
Sent from my Nexus 6P using Tapatalk
SlimSnoopOS said:
Are you doing a Factory Reset in TWRP to actually wipe the rom away? You list system, cache, and data (internal storage) but not Factory Reset.
Alternatively, are your apps reinstalling after signing into your account at Setup Wizard?
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
He's already performing a factory reset by wiping the partitions individually.
Heisenberg said:
He's already performing a factory reset by wiping the partitions individually.
Click to expand...
Click to collapse
That's what you would think, but why is this happening?
FWIW, I always TWRP factory reset, then wipe all the partitions he mentioned again by itself and have never seen this behavior on any version of TWRP.
farfromovin said:
That's what you would think, but why is this happening?
FWIW, I always TWRP factory reset, then wipe all the partitions he mentioned again by itself and have never seen this behavior on any version of TWRP.
Click to expand...
Click to collapse
I have no explanation for what's happening, I really don't know. I only ever use the advanced wipe menu, it's pointless performing the factory reset too.

Failed installing Lineage 14.1, wiped system, now restoring stock won't boot

Attempt 1 to install Lineage
Tried installing the Lineage 14.1, it kept doing a blank-but-illuminated screen, then turned off and back on, resulting in a boot loop.
We tried a couple of things - first the more conservative wiping of just data, dalvik and cache.
This did the boot loop described above. I then restored the stock backup and all was well.
Attempt 2 to install Lineage
The second time we wiped the system partition in addition to the above. Same bootloop.
Went to restore the backup of stock again, but now it's getting stuck at "I'm not a phone I'm a comprehensive yada yada" screen. It never progresses past this.
Attempts to get Stock Restore working
We've tried restoring just the system, data and dalvik
We've also tried System Image in addition to these.
No joy.
We don't have a laptop or other device to hand for a few days so we have just what's on the phone - the Lineage 14.1 zip, the stock backup and TWRP.
Any ideas how we can get back to a working phone with either OS?
What type of LePro3 do you have?
X720,X722,X727?
It's the X722
kenbw2 said:
It's the X722
Click to expand...
Click to collapse
The X722 model is not supported by Lineage.
I think that you have a problem. Hope anyone can help you to go back to stock successfully.
When doing the stock restore, we didn't restore the boot image.
Is that something worth trying?
kenbw2 said:
When doing the stock restore, we didn't restore the boot image.
Is that something worth trying?
Click to expand...
Click to collapse
Yes, you could try it. Please, write, was it useful or not)
Success!
Restored System,. System Image, Cache, Data and Boot partitions and all is now back to normal.
Phew!
kenbw2 said:
Success!
Restored System,. System Image, Cache, Data and Boot partitions and all is now back to normal.
Phew!
Click to expand...
Click to collapse
That is great. So, is bluetooth works fine after that?

Lineage stuck on boot loop on startup

Hi,
I have LineageOS 14.1 installed on my Moto G4 Plus. All of a sudden it rebooted and was stuck on the booting screen. I can get to TWRP. Things I tried that didn't help
wait 30 minutes
plug in phone to charger
clear cache
fully power off then on
If it comes down to it, I could flash a new ROM, but would like to save/backup the text messages/whatsapp messages.
@lightningglasses
Anything you installed/flashed before rebooting ?
try to dirty flash ROM and check if it boots or not.
____Mdd said:
@lightningglasses
Anything you installed/flashed before rebooting ?
Click to expand...
Click to collapse
nothing.an mp3 player app
try to dirty flash ROM and check if it boots or not.
Click to expand...
Click to collapse
will that loose the text messages etc?
lightningglasses said:
will that loose the text messages etc?
Click to expand...
Click to collapse
wiping "Data" deletes everything, dirty flashing does not not.
Just wipe delvik-Art and cache (*not data*), Then install ROM (plus gapps and root if you need), reboot, it will take around 10 minutes to re-generate delvik data, then it should boot..
____Mdd said:
wiping "Data" deletes everything, dirty flashing does not not.
Just wipe delvik-Art and cache (*not data*), Then install ROM (plus gapps and root if you need), reboot, it will take around 10 minutes to re-generate delvik data, then it should boot..
Click to expand...
Click to collapse
hmm didn't work, any other ideas?
lightningglasses said:
hmm didn't work, any other ideas?
Click to expand...
Click to collapse
I forgot to mention in previous post, did you wipe system? Try with that and install rom.
Reinstalling ROM heals damage made to /system partition and to boot, but not to /data.
so if still doesn't boot, that means damage happened to /data and you need to clean it, result in lost of data of apps (whatsapp and message you mentioned in your post.)
Still if you know what apps you installed last, delete it from /data/app/xyz-app (boot TWRP > advance > file manager)
____Mdd said:
I forgot to mention in previous post, did you wipe system? Try with that and install rom.
Reinstalling ROM heals damage made to /system partition and to boot, but not to /data.
so if still doesn't boot, that means damage happened to /data and you need to clean it, result in lost of data of apps (whatsapp and message you mentioned in your post.)
Still if you know what apps you installed last, delete it from /data/app/xyz-app (boot TWRP > advance > file manager)
Click to expand...
Click to collapse
It is still stuck in a boot loop after I
cleared cache, dalvic/art and system
used twrp's file manager to delete all recently installed apps from /data/app
flashed newest lineageos rom
clear davilink again
waited 15 minutes with phone plugged in
When should I wipe cache/dalvik/system? Before or after flashing rom?
lightningglasses said:
It is still stuck in a boot loop after I
cleared cache, dalvic/art and system
used twrp's file manager to delete all recently installed apps from /data/app
flashed newest lineageos rom
clear davilink again
waited 15 minutes with phone plugged in
When should I wipe cache/dalvik/system? Before or after flashing rom?
Click to expand...
Click to collapse
There is no other way to get your device back without losing data.
I have never used Titanium backup app but i know there is feature to restore data from TWRP backup, you can take backup of /data and restore backup of whatsapp.
I am still not sure about that feature, if you have time then i can test that feature, otherwise there is no way to keep data.
Edit: whatsapp makes chat backup every night at 2AM, if you haven't had any important chats after that, you can go for wipe.
If you can pay for titanium backup there might just be a way. I am not 100% sure but take a backup of the "data" partition(you can backup everything but data is most important) in twrp in internal storage only. Then clean flash everything. Then install titanium backup and buy the pro key. Then restore from twrp. If you find an option to restore only data then that's a better option. Downloading the app and restoring the data is better than restoring app and data. I'm not sure if it will work. But if nothing is working and your data is 100% vital you may wanna try this.
Another tip, don't restore blindly everything cuz bootloop may occur again

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