Hey guys, Need your quick help here if possible. Im selling my Iphone 3G 16GB. Its currently JB'd on 3.1.2 but NOT unlocked. The guy who's interested wants me to unlock it for him and me to provide him a sim card. Since Im not using that sim card in my new phone, can I just let him have it?....not sure. Can someone point me in the direction for a quick and easy way to unlock the phone? Thanks very much in advance edit - I also want to wipe the jailbreak BUT keep it on ios 312....is there a trick to this?