I'm really desesperated and I haven't solution to unlock my S3 with I lost the EFS v1 in an stupid Cyanogenmod upgrade (can you beleive that?).
I'd like to know if is possible downgrade from Android 4.1.2 to 4.1.1 to unlock my phone which I really need it.
This idea come from here:
Originally Posted by pcwiztech View Post
You need to get a 4.1.1 flashable zip, flash with custom recovery and do service menu debug trick to do free unlock, worked with my efs v2 4.3 i9305. Feel free to reply if you need further help
But this guy has a i9305 and I have a i9300.
Do you think that this can work?
Thank for your answers guys