So, I have a 3g with firmware 3.1.2 bb 05.14.02 that I'm trying to unlock. I tried using redsn0w to upgrade my bb to the ipad 06.15.00 bb, but my ipsw is not recognizable. So, is there a way to get the ipsw recognizable without having to upgrade my firmware or is there a way to unlock this specific firmware and bb? I tried searching for the answer, but haven't found it. Any help would be greatly appreciated.