Okay, I searched but couldn't find the answer. I sold my Iphone 2G on ebay and the buyer is using it on T-Mobile. I unlocked and jailbroke it using Redsnow. I also upgraded to the 3.0 OS. Can someone point me in the right direction on how this guy needs to get it working on t-mobile. I googled and found alot of answers on the old OS but not much on the 3.0 OS. Anyone here done it sucessfully?