I bought a used GS3 GT-I9300 and tried to install a custom rom on it. One thing lead to another, a problem after every problem and now I'm at a dead end :\
Last time I was able to boot into a ROM, was via restoring through nandroid backup. But the IMEI had become "unknown". I searched it around to find that this was a problem with the EFS folder. Luckily I had a backup of the efs part before hand! But I can't even utilize the backup! -_-
The Problem is, whatever I flash via odin (no matter which stock rom), I end up stuck at the "Samsung Galaxy SIII" screen. I have a backup of the efs, but if I go through philz recovery, it's not able to find my backup. I've tried every guide at there, and been searching about a whole day and now I give and ask for help from you guys with experience. What am I supposed to do, to get to a point where I can use my phone? Really sad after attempting so many things. NEED ASAP HELP PLEASE! :'( Thanks in advance.