i am with ATT i have an iphone plan. but when i jailbroke my iphone 3g on os 3.0 it became retarded as hell. i tryed several times to downgrade the firmware and now itunes doesnt even recognize my phone. i put it in DFU mode restore it to regular 3.0 OS and it gives me a i need to connct to itunes thing on the iphone but when i plug it in i keep getting an error from itunes saying it cant read the iphone.