Hi I am new here and looked at a few pages but did not find anything related.

I have the first iphone, 2g i believe and I am running the 3.1.2 (7D11)firmware and I have jailbroken it and unlocked it but when i insert the T-Mobile SIM card it says Different SIM detected Please connect to iTunes. iTunes gives me a SIM card error that the SIM car is not compatible to get a compatible SIM.

Now the phone does have the T-Mobile logo on and full reception, I can receive TXT and call but I cannot go pass the Please connect to iTunes screen and all it allows me to do is emergency phone calls.

Please advice, any help is greatly appreciate it!