A válasz az XDA-n volt
FIX for anyone having "Confirm Password" issue on Boot:-
1) Just enter some wrong password multiple times
2) Then a Warning message will appear telling you it will remove all SD Card data
3) Type something wrong again!
4) Let the SD Card get wiped.
5) Then the system will bootup properly next time.
I just did one more *2767*3855# Full wipe after bootup.
tessék, ha valakinek hasonló problémája lenne a jövőben.