ok so here is the thing i have a Iphone 3g V2.2 (T-Mobile) that i unlocked/jailbroke a wile ago, and love it. but now that V 3.XX is out i keep running into apps and such that wont work until i upgrade to 3.XX. i have been looking about trying to figure out how to upgrade and unlock to V 3.1.2 i would have done it buy now but i keep finding threads and post's every ware that say it cant be done and others that say it can.. im sooooo lost any help on what to use and ware to get the files?