So I have a 3G (NOT 3Gs) I got last august. It's been jailbroken on many an occasion as well as unlocked. When the 4.0 beta came out I upgraded to it. Due to it being buggy as hell I downgraded back to 3.1.3 and jailbroke it again. I am buying a 3Gs this week and want to sell the 3G unlocked on ebay but before I try and unlock it and screw it up, I wanted to check and make sure and see if anyone knows if it can be unlocked seeing as it was upgraded to 4.0 and all. If it can but requires some work if someone could point me in the right direction of the steps I need to take that would be helpful. I thought I might have found some but chose not to cause it didn't quite look legit.