hi i need help please,have an iphone which we got off ebay,and it was unlocked and jailbroken, my daughter conneccted to itune and became locked again,it is jailbroken now but i can not get the sim unlocked,the sim is locked to at&t i live in australia and want to use optus prepay sim it is on version 3.1.2(7d11) and firmware is 05.14.02 can someone help please
Go into Cydia > Manage Sources > and Install ultrasn0w If that doesn't work then you can't unlock it at this time. I've heard that 05.14.02 baseband cannot be unlocked but I can't remember whether it's for the 3GS or the 3G as well.