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...
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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.
I have a N910F 6.0.1 stock. when I go to settings and I try to change fingerprint and fingerprint backup password it says that password is wrong, but it's correct. it doesn't recognize my finger too. is there any way to reset it and add a new fingerprint without format all? I've already tried to clear fingerprint app data and cache but with no success. another way? please help.
gtamark said:
I have a N910F 6.0.1 stock. when I go to settings and I try to change fingerprint and fingerprint backup password it says that password is wrong, but it's correct. it doesn't recognize my finger too. is there any way to reset it and add a new fingerprint without format all? I've already tried to clear fingerprint app data and cache but with no success. another way? please help.
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Click to collapse
I have same problem. I think this happen because I use dual boot patcher to dual boot note 4 with cm 13 and then I try to add fingerprint in cm13. I didn't found any solution for this.
So i have recently updated my phone to the latest 7.0 software on my galaxy s7. ever since the update, my fingerprint scanner doesn't work. When i go into the system settings to try and setup new fingerprints it gives me the error "An error has occurred with the fingerprint sensor. If this message appears repeatedly, restart your device." I tried restarting the device, clearing the app's cache and data, as well as clearing the system cache in the boot menu. When i go into the FingerPrint test under the HwModuleTest(*#0*#) and perform a normal scan, everything comes back as failed. Is my only option to backup my phone and do a complete reinstall?
sandman817 said:
So i have recently updated my phone to the latest 7.0 software on my galaxy s7. ever since the update, my fingerprint scanner doesn't work. When i go into the system settings to try and setup new fingerprints it gives me the error "An error has occurred with the fingerprint sensor. If this message appears repeatedly, restart your device." I tried restarting the device, clearing the app's cache and data, as well as clearing the system cache in the boot menu. When i go into the FingerPrint test under the HwModuleTest(*#0*#) and perform a normal scan, everything comes back as failed. Is my only option to backup my phone and do a complete reinstall?
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Click to collapse
Try completely reinstalling QA6. I highly doubt the update caused the fingerprint scanner to start working though since it works perfectly fine on my phone.
VenomMOD said:
Try completely reinstalling QA6. I highly doubt the update caused the fingerprint scanner to start working though since it works perfectly fine on my phone.
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Click to collapse
How do i go about reinstalling the latest android version on my phone?
sandman817 said:
How do i go about reinstalling the latest android version on my phone?
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Click to collapse
Flash PK1 with Odin and take the ota again. When the ota is done, factory reset the phone to make sure any software issues are gone.
Should I be using smart switch to backup my contacts/messages/etc to my computer?
I recently updated my phone and am having the same problem. Have you found a solution for you that worked (I also tried wiping my cache partition and a soft reset)
aizq29 said:
I recently updated my phone and am having the same problem. Have you found a solution for you that worked (I also tried wiping my cache partition and a soft reset)
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Click to collapse
I also just updated my SM-G935FD via OTA to Android version 7.0.
Since then, fingerprint scanner is not working. Like for OP, all tests fail under HwModuleTest.
I tried to remove all fingerprints, but it is impossible to add new fingerprints - the error message is "Make sure that the Home key is clean and dry, then try again." Obviously, the fingerprint sensor is as dry and clean as it was before the update (when it worked perfectly).
Since then I tried, unsuccessfully:
- removing old fingerprints and adding new fingerprints (does not work, cf. above)
- formatting cache partition
- performing a hardware reset
Please advice, thanks.
P.S. I do not have access to Odin, since I do not have a Microsoft OS.
I had constant issues with the ATT firmware's fingerprint reader performance (6.x) -- wouldn't recognize my fingerprint when I tried to unlock and would often get the forced timeout.
It works flawlessly for me on the u firmware (still 6.x unfortunately). Night and day.
Same issue with me here in the UK. Just did the Nougat OTA update, having no end of issues, including the "dry home button" stuff with the fingerprint scanner. Also, the stock browser seems to have lost it's secret / incognito mode.... why can't they just leave stuff alone? Seems like my only option at this point is to downgrade back to marshmallow and put up with the annoying update notification.
Same here what do we have to do ?
Wildarmtins said:
Same issue with me here in the UK. Just did the Nougat OTA update, having no end of issues, including the "dry home button" stuff with the fingerprint scanner. Also, the stock browser seems to have lost it's secret / incognito mode.... why can't they just leave stuff alone? Seems like my only option at this point is to downgrade back to marshmallow and put up with the annoying update notification.
Click to expand...
Click to collapse
Downgrade doesn't help
https://forum.xda-developers.com/tm...t-s7-edge-g935t-t3567502/page120#post72332585
CHECK OUT MY POSTS BETWEEN PAGES 116 AND 120.
Has anyone had, conversely, an *overactive* fingerprint sensor?
While the phone is unlocked, at times when my finger is only resting on the scanner, I'm taken to the accessibility settings with an alert asking "Grant Permission: Please, grant permission to allow this feature".