Hi guys. Im having trouble trying to unlock an iPhone 3g running 4.2.1 (8C148) and Baseband 05.15.04. It was given to a friend by the original owner sometime ago, and he now wants to use it, however it has not been factory unlocked and the orig owner's no longer with vodaphone. I let iTunes update it, Ive jailbroken with redsn0w win 0.9.15b, (baseband option ticked) installed ultrasn0w 1.2.8 (via cydia) when I put an SFR based sim in, it searches for a network but never finds one. The carrier setting under general/about have updated to SFR (automatically) Have I missed a step somewhere? thanks in advance.