lose my efs file

[Fabolouspt]

i losing my efs folder and files and i dont have a backup
can i recover if i install a stock firmware on galaxy s3
if yes ,were can i download the firmware my galaxy s3 its from Portugal

help me please

 

[boomboomer]

Depends how you 'lost' the efs. If you deleted it then no, nothing will fix it apart from a paid repair.

If you just tried to downgrade to a firmware incompatible with your efs then flashing a 4.3 stock firmware might fix it. Download from sammobile.

 

[Fabolouspt]

no i never deleted i just install a galaxy s5 rom
but now i have installed a stock rom every thing its fine my imei its good but i can unlock my galaxy s3 SIm
how do i do my firmware its 4.3

 

[boomboomer]

Buy an unlock code.