So I sold my old iPhone3GS with 3.1.3 firmware and the 5.12.07 bootrom to an Asian man. I used that new cydia thing (forgot what was it called) and it said it was unlocked. Guy calls me up and says its not unlocked. He's steaming and threatening to call the police. This transaction was done on craigslist. I'm pretty much screwed, please someone help me.