Database Users

Bad suprise with fingerprint scanner after TWRP restore

So yesterday I did my first TWRP restore. Restore worked fine, device booted without issues to the lockscreen.
Lockscreen was protected by fingerprint.
To my surprise, none of my fingers were detected. Strange I thought, but hey, thats what the backup password is for.
So I entered the backup password and ... the device unlocked.
So, no big deal I thought, somehow the fingerprint data got scrambled in the restore process but the password worked.
Next step: Disable Fingerprint lockscreen / Relearn fingerprints.
Of course here I have to authenticate myself again with fingerprint (not working of course) or the backup password.
To my surprise, the device does not accept the backup password when entered in the fingerprint settings...
Uh Oh, I now thought. Well, I CAN unlock my device but entering the backup password every time is kind of annoying.
As I found no solution on how to disable the fingerprint lockscreen I was forced to factory reset the device (strangely enough during factory reset I was again asked for the backup password and it was accepted in this dialog).
So, as a warning, disable your fingerprint lockscreen before making a TWRP/CWM backup.
If someone has a tip on how I could have avoided a factory reset, I would be grateful to learn more...

Gandhi70 said:
So yesterday I did my first TWRP restore. Restore worked fine, device booted without issues to the lockscreen.
Lockscreen was protected by fingerprint.
To my surprise, none of my fingers were detected. Strange I thought, but hey, thats what the backup password is for.
So I entered the backup password and ... the device unlocked.
So, no big deal I thought, somehow the fingerprint data got scrambled in the restore process but the password worked.
Next step: Disable Fingerprint lockscreen / Relearn fingerprints.
Of course here I have to authenticate myself again with fingerprint (not working of course) or the backup password.
To my surprise, the device does not accept the backup password when entered in the fingerprint settings...
Uh Oh, I now thought. Well, I CAN unlock my device but entering the backup password every time is kind of annoying.
As I found no solution on how to disable the fingerprint lockscreen I was forced to factory reset the device (strangely enough during factory reset I was again asked for the backup password and it was accepted in this dialog).
So, as a warning, disable your fingerprint lockscreen before making a TWRP/CWM backup.
If someone has a tip on how I could have avoided a factory reset, I would be grateful to learn more...
Click to expand...
Click to collapse
Hi there, I have same bad experience with it, even worse !
after reading your post I've trying to prepare myself so I turned off the screen lock fingerprint security and full of happiness flashed new rom, then I've noticed all my data moved before to PRIVATE disappeared so they are not stored in any more at internal sd card, but somewhere else! So i've restored my previous backup from twrp but none of my fingerprints works also my password is not recognised anymore in private mode
So it looks like I lost all my files saved in private mode, I am lucky it wasn't nothing special, just random photos I've put there for tests! but anyway we need some solution for future backups, maybe improved recovery or something

Gandhi70 said:
So yesterday I did my first TWRP restore. Restore worked fine, device booted without issues to the lockscreen.
Lockscreen was protected by fingerprint.
To my surprise, none of my fingers were detected. Strange I thought, but hey, thats what the backup password is for.
So I entered the backup password and ... the device unlocked.
So, no big deal I thought, somehow the fingerprint data got scrambled in the restore process but the password worked.
Next step: Disable Fingerprint lockscreen / Relearn fingerprints.
Of course here I have to authenticate myself again with fingerprint (not working of course) or the backup password.
To my surprise, the device does not accept the backup password when entered in the fingerprint settings...
Uh Oh, I now thought. Well, I CAN unlock my device but entering the backup password every time is kind of annoying.
As I found no solution on how to disable the fingerprint lockscreen I was forced to factory reset the device (strangely enough during factory reset I was again asked for the backup password and it was accepted in this dialog).
So, as a warning, disable your fingerprint lockscreen before making a TWRP/CWM backup.
If someone has a tip on how I could have avoided a factory reset, I would be grateful to learn more...
Click to expand...
Click to collapse
Same thing happened to me today, tried restoring Echoe rom (nandroid) then smack!! fingerprint no longer works
having to factory reset

That's weird, because i did a fully nandroid backup in TWRP on my Samsung Galaxy Note 4 (SM-N910F) like 4-5 days ago. I did that to try out another ROM, but i didn't like that so i restored the ROM i took a nandroid backup of.
After that, my fingerprint scanner works perfect or as good as it did before i did a nandroid backup.

Tom-Helge said:
That's weird, because i did a fully nandroid backup in TWRP on my Samsung Galaxy Note 4 (SM-N910F) like 4-5 days ago. I did that to try out another ROM, but i didn't like that so i restored the ROM i took a nandroid backup of.
After that, my fingerprint scanner works perfect or as good as it did before i did a nandroid backup.
Click to expand...
Click to collapse
well,I tried again (this time I disabled the fingerprint lockscreen before making the backup) and again, after restore, I cannot access the fingerprint settings.
Fingerprints are not recognized and the backup password does not work within the settings dialog.
Not that big of a problem as I did not use the fingerprint lockscreen.
But does anyone know a way to completely reset the fingerprint data/backup password other then making a factory reset?

krohme said:
Same thing happened to me today, tried restoring Echoe rom (nandroid) then smack!! fingerprint no longer works
having to factory reset
Click to expand...
Click to collapse
Backup password did not work either?

Gandhi70 said:
Backup password did not work either?
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Click to collapse
No it only worked to unlock the device - but strangely enough the same backup password would not be accepted by the system for gaining access to the finger print reset settings. Very weird.. I'll be holding off restoring from a nandroid until I know the reason for this bug.

I had the same issue from a cwm restore this evening. Fingerprints not recognised on lockscreen but password is. When I goto try and re-register my fingerprints I can't access the menu with either fingerprint or backup password. Did you guys wipe the cache and dalvik cache before restoring? Could this even have an effect on the fingerprint data? I can't face having to factory reset and then setting up again

my device got effed up... I was forced to delete the stored fingerprints cause I had no options, so when I did that, the fingerprint sensor came up the an error and it said to restart, I did so many times, it didn't work, got corrupted, so I odined the firmware, no luck, we had an update, so I odined the firmware, and still didn't work, this is my 2nd device and its working great.. on the tmobile thread, it stated to delete any stored fingerprints before doing a nandroid backup, or flashing a new rom,, my 2nd phone is working fine, I have flashed and tested my roms without any issues,
try to delete any stored fingerprints, then in twrp recovery, wipe system, data, cache and dalvik, I always do that 2x to make sure everything is clean,
do ODIN and use your firmware to see if it fixes your issues,
some have had success, others had to return there devices, don't know,

Any update to this issue? Returning the device not an option anymore

Well i switched from fingerprint to pattern lock screen. No problem with that one and Cwm restore works fine too
Gesendet von meinem SM-N910F mit Tapatalk

For All those suffer from a bad suprise with fingerprint scanner after TWRP restore: please visit this page and thank the great developer Dr. Ketan.

ucevik said:
For All those suffer from a bad suprise with fingerprint scanner after TWRP restore: please visit this page and thank the great developer Dr. Ketan.
Click to expand...
Click to collapse
Flashed with no luck. Still gives me error when opening fingerprint
Am I going to lose the fingerprint function forever? [emoji26]

So, what's the right thing to do if you want to install a new firmware and restore the data partition from nandroid backup?
I think:
1. Do nandroid backup
2. Unlock device, cancel all fingerprints
3. Full reset device
4. Restore nandroid of data only
5. Setup fingerprints again
Might this procedure work as expected?

Count me as another with the same problem. I even used Android Device Manager to change the backup password. It updates the screen lock password but does not update the fingerprint settings backup password. So still no solution.
There has to be a way to fix this w/ factory reset. The fact that factory reset wipes out the registered fingerprints indicates that the info is stored in /data. Where is it?
Edit: There is a "fingerprints" app. Clear data is not an option. When I select "Manage storage", I'm told that I do not have permission. If we know where the data is stored, we can wipe it and maybe start over.

Question for those who have this specific problem--do you have Xposed installed?

I started a thread here:
http://forum.xda-developers.com/general/general/25-via-paypal-to-1st-person-helps-reset-t2988027
Offering $25 to someone who comes up w/ a solution.....

Honestly I just stopped using the fingerprint scanner. I cannot access the fingerprint data but as i am using the pattern lockscreen i don't care.
Gesendet von meinem SM-N910F mit Tapatalk

Maybe one should look at the log while starting over with a pristine note 4 and setting up the fingerprint recognition.

Gandhi70 said:
Honestly I just stopped using the fingerprint scanner. I cannot access the fingerprint data but as i am using the pattern lockscreen i don't care.
Gesendet von meinem SM-N910F mit Tapatalk
Click to expand...
Click to collapse
Me also, and have converted all my other devices to pattern as well. The Samsung fingerprint implementation comes with too many baggage. I would still, though, like to know of a solution to clear up the registration.

Password on Bootup

Ever since I have unlocked my bootloader I have 2 things that bug me.
1. Whenever I restart my phone it asks for my password/pin/pattern everytime before it will start. It's not a huge deal except when I restart my phone and forget I have to do that part it sits a while waiting for the password.
2. The little "warning" screen that tells me my bootloader is unlocked. Just like the way the old Nexus's were with no warning, just the little white unlocked pad lock on the google screen.

It will ask for your password on restart even if your bootloader is locked.

That's standard behavior, It will prompt you for manual password entry on every restart. If you don't want it, then disable secure startup. The bootloader unlock warning is common as well.

When you set your pattern or password it asks you if you want it enabled before android boots.. If you don't want that then set it to none, then reset it to pattern and answer no when it asks the question if you want pattern/pin required before the system boots
Sent from my Nexus 6P using Tapatalk

You can disable it in Settings -> Security -> Screen Lock, and click Password, select "No thanks". Same with PIN or pattern lock.

The weird thing is that I selected 'No thanks' to pin on boot, and it is still there in the settings. But, should I reboot the device and use fingerprint to unlock it requires a pin.

graffixnyc said:
When you set your pattern or password it asks you if you want it enabled before android boots.. If you don't want that then set it to none, then reset it to pattern and answer no when it asks the question if you want pattern/pin required before the system boots
Sent from my Nexus 6P using Tapatalk
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Click to collapse
That must only work with an encrypted device?
I don't get the prompt or the setting.

tech_head said:
That must only work with an encrypted device?
I don't get the prompt or the setting.
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Click to collapse
Same here, rooted with mod boot image

I've tried all of the above and don't get the prompt or setting. I'm also modded, but this is driving me crazy. Is there no way to turn this setting off?

This setting is set when you're initially setting up the phone for sure - you have to manually choose "no thanks" on the page right before where you actually start tapping on the fingerprint sensor to set it up. I'm not certain about the encrypted vs. unencrypted piece, although I wouldn't think that would make a difference...

I did it once, and then reflashed my entire system and upgraded twice since then. I didn't have the option after that first time.

kboya said:
The weird thing is that I selected 'No thanks' to pin on boot, and it is still there in the settings. But, should I reboot the device and use fingerprint to unlock it requires a pin.
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Click to collapse
The exact same thing happened to me so it must be a bug

Pilz said:
The exact same thing happened to me so it must be a bug
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Click to collapse
Yep. Same here. I've tried everything and it still always asks me for my password on startup.
Really annoying since random reboots are an issue too.
Basically, if my phone reboots at during my sleep (which it has done a few times already) I don't have my alarm in the morning.

Same problem here. I selected 'No thanks' (don't ask for a password on reboot), but it still asks for a password after I use my fingerprint every time I reboot the phone. Changing from password to pattern and back and turning "ask for password" on/off didn't help.

Myrrhman said:
Yep. Same here. I've tried everything and it still always asks me for my password on startup.
Really annoying since random reboots are an issue too.
Basically, if my phone reboots at during my sleep (which it has done a few times already) I don't have my alarm in the morning.
Click to expand...
Click to collapse
gnadenlos said:
Same problem here. I selected 'No thanks' (don't ask for a password on reboot), but it still asks for a password after I use my fingerprint every time I reboot the phone. Changing from password to pattern and back and turning "ask for password" on/off didn't help.
Click to expand...
Click to collapse
It will always do this.
Unlock using your backup screen lock method
Sometimes you might need to use your backup PIN, pattern, or password:
*When your fingerprint isn't recognized after a few tries
*After restarting your device
*After switching to a different user on the device
*After more than 48 hours have passed since you last unlocked using your backup method
Click to expand...
Click to collapse
From "How to use your fingerprint" on Nexus Imprint Help page: https://support.google.com/nexus/answer/6285273?hl=en
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
It will always do this.
Click to expand...
Click to collapse
In that case, the option and dialogs to turn that behavior off are useless.

gnadenlos said:
In that case, the option and dialogs to turn that behavior off are useless.
Click to expand...
Click to collapse
I'm almost positive the "Password on boot" option y'all see blocks access to recovery as well. When enabled, I think it locks access to the phone on the recovery level with a password. With it off, you can fully access recovery. Could y'all try and see if that's what happens?
I don't see the "password on boot" setting in Chroma's security settings, idk if being decrypted affects this.

SlimSnoopOS said:
I'm almost positive the "Password on boot" option y'all see blocks access to recovery as well. When enabled, I think it locks access to the phone on the recovery level with a password. With it off, you can fully access recovery. Could y'all try and see if that's what happens?
I don't see the "password on boot" setting in Chroma's security settings, idk if being decrypted affects this.
Click to expand...
Click to collapse
Sorry, i'm not entirely sure what you mean.
I have TWRP installed and i do know when first booting into TWRP, you must enter the password. After that, you can normally boot into TWRP.
BTW: I've gotten rid of the random reboots it seems. I simply flashed the official firmware from the Google Developers site a few days ago. I've not had a random reboot since. Really happy about that.

Myrrhman said:
Sorry, i'm not entirely sure what you mean.
I have TWRP installed and i do know when first booting into TWRP, you must enter the password. After that, you can normally boot into TWRP.
BTW: I've gotten rid of the random reboots it seems. I simply flashed the official firmware from the Google Developers site a few days ago. I've not had a random reboot since. Really happy about that.
Click to expand...
Click to collapse
Does TWRP always prompt you for a password regardless of whether you have "Password on boot" on/off?
Editv Glad you resolved your random reboots! That's always a good feeling.
Sent from my Nexus 5X using Tapatalk

SlimSnoopOS said:
Does TWRP always prompt you for a password regardless of whether you have "Password on boot" on/off?
Editv Glad you resolved your random reboots! That's always a good feeling.
Sent from my Nexus 5X using Tapatalk
Click to expand...
Click to collapse
I tried (had to install the latest TWRP anyways) and no.
If you choose Password off at boot, TWRP won't prompt you.

Security Challenge locks up sometimes

Like, I don't know if I'm the only one experiencing this issue. Whenever I do something with the system, boot back up, first prompt telling me to enter my password to continue the boot, works. However, when I hit the system, enter the lock screen, it sometimes ask me for another password just in case. This second time I enter the password, wrong. I had made sure that my password was right, nope, still locked out. I had to use "No Lock for Home 2" Xposed module to somehow get pass this freaking lock screen. Am I the only one experiencing this issue or did I do something wrong?
I have tried almost everything,
1) Try to set a new password via Android Device Manager (LOCKED STILL)
2) Going to Security -> Password -> Typing the password all over (LOCKED STILL)
3) Going to Security -> Switching lock type to none -> Setting password again (LOCKED STILL)
4) Going to Security -> Switching to PIN (FINALLY WORKED)
What's bizarre is that under the Security settings my password apparently works, just not on the lock screen.
I would honestly prefer password over PIN and this is driving me insane. Is there a way to wipe the security settings in TWRP safely? Last time I tried deleting gatekeeper.password.key under /data/system in TWRP File Manager, it worked but FC whenever I try to set a new password.

Try clearing credentials under security

galaxy s4 nutjob said:
Try clearing credentials under security
Click to expand...
Click to collapse
Nope, still the same.

OPT not accepting gmail account after factory reset

Hey,
my OnePlus 2 was driving me crazy so I had to factory reset it.
After that I was asked to log in to my old Google account, which I did, but it wasn't accepted. It said I have to use the account that was used before. I'm a 100% sure that I used the correct account, though.
I tried to bypass the authentication by using the keyboard settings method. I've also tried to flash a ROM via recovery and fast boot, but the bootloader wasn't unlocked, so that didn't work either.
Does anyone know what the problem is and how to solve it?
I'm using a OnePlus 2 A2001 with the newest OxygenOS version.
Thank you in advance!
/EDIT: Okay, the problem is fixed, but I don't really understand how. After rebooting the phone I was able to configure the settings, but after that I was asked to log in to my old Google account again. After I tapped the button to log in the same message popped up over and over again. I decided to reboot the phone again and got to the home screen immediately, everything works fine now.

PIN problem and Security Settings crash

Goodmorning everyone,
I am desperate. I have rooted on my Huawei P9 Lite device by following the guide for Android 7 with EMUI 5. Initially it seemed to have gone smoothly. Not without difficulty I unblocked the bootloader, installed the TWRP, the kernel and the SuperUser application.
However after installing the Elite Kernel for P9 Lite All Variants CxxB3xx With MagiskSU v10.1 by HassanMirza01, I did not accept the PIN when I restarted the device despite being the right one, preventing me from entering and doing any kind of operation. I did a search on the internet and learned to be a fairly frequent thing, so I deleted with TWRP the files "gatekeeper.password.key", "gatekeeper.pattern.key", "locksettings.db", "locksettings.db-shm", "locksettings.db-wal" from /data/system as indicated.
Indeed, I rebooted my device again and I did not ask for any PIN, so I could use the device, but when I set up a new PIN, it does not allow me to. If I try to register one, after entering the PIN for the second time as confirmation, it hangs for a few seconds and goes back to the screen lock selection still set to "None".
Same thing if I try to set the fingerprint: first asks me to create the PIN and then stays impaled at the same point.
Also from "Settings" if I try to go to "Advanced" ---> "Security" the app crashes. Same speech if I try to access the "Developer Options".
Please help me solve this problem without having to do another Factory Reset because I can no longer lose all the data again.
Many thanks in advance!