i stupidly synced my jailbroken 1.1.2 iphone, with a tmobile sim to itunes, and agreed when prompted to update to 2.0. Now Itunes says that my sim card is unsupported and i can only make emergency calls. Does this mean that only an at&t sim will work in it now?? I've checked on youtube about jailbreaking 2.0 but i need a supported sim to get the phone out of emergency call only mode. Can anyone tell me anything please?? Any help would be hugely appreciated!