Downgrade the B892 with the method "5irom".
Backup IMEI I put the SDcard on the PC.
Vain attempts ( B895 to B888, B885... ) to return the IMEI - still "0".
But phone is fully functional. It calls, receive calls, write SMS.
Many attempts - but the result is still "0".
But the phone is working. How is this possible?
What happens if you stay forever "0"?