Originally Posted by lookin4tna
I cannot boot my phone whenever i do it says "System software not authorized by AT&T has been found on your phone." I have tried every solution for about 5 hours. I have tried the odin stock tar.md5 files i have the Galaxy s4 AT&T i337.
If you were on MDL, you need to use Loki. Try a different kernel too and if not you probably need a different firmware.
Sent from my SGH-I337 running Blackbox 3.0
Current Device: ATT Samsung Galaxy S4 (i337)
Droid Bionic (GSM Hacked)
HTC Inspire 4G (Desire HD)
HTC Dev Phone 1 (Dream/G1)