Hey guys, I've been out of the game for a while now and I need help on upgrading a 3G iPhone running on fw: 3.1.3 with baseband: 05.12.01 and maintain the unlock. The two questions I would like answered are: 1. What is the highest fw I can take this phone to. 2. Where can I get instructions on how to go about doing so. Any help would be greatly appreciated.