Good Night!
I was with the stable xiaomi.eu_multi_MI9_V12.0.6.0.QFACNXM_v12-10 everything worked fine including the fingerprint.
I updated to xiaomi.eu_multi_MI9_20.12.28_v12-11 and the fingerprint stopped working.
Can anyone help me ...
Good night.
I don't know how, but the fingerprint has returned to work.
I performed the following steps: I regressed to stable according to
@geoorg:
1, Boot to twrp and click install
2, Select ROM zip
3, Swipe to confirm flash
4, After flashing don't reboot
5, Wipe dalvik and cache
6, Delete contents of "data / system / package_cache" using twrp file manager
7, Reboot device
8, Be patient for first boot
Needless to say, it always restarted for twrp.
Then flash the xiaomi.eu_multi_MI9_20.12.28_v12-11, with the same steps:
1, Boot to twrp and click install
2, Select ROM zip
3, Swipe to confirm flash
4, After flashing don't reboot
5, Wipe dalvik and cache
6, Delete contents of "data / system / package_cache" using twrp file manager
7, Reboot device
8, Be patient for first boot
The device reboot very well and I went to the settings / security and the fingerprint, the second time I put my finger, I moistened my fingertip (I had seen this in some post).
What is certain is that I managed to get the fingerprint up and running.