Alright so my friend asked me to unlock his Iphone. little did i know that it was bootloader 5.09 and already upgraded to 2.30, so anyways I downgraded to 2.02 with quickpwn, and did everything like I would have unlocked a normal phone, everything went fine except it didnt detect his sim. It just had no service.

I figured out that it wasnt going to be unlockable, so I just said screw it and updated it with iTunes instead to the latest version. Then I jailbroke it, and pressed clear all data, etc, all of that. Now when he puts his sim card in (he switched to ATT), it still doesnt detect the ATT sim!

can anyone help me out??