Ok, so my iPhone 3Gs 16gb got error 28 (hardware error). And I have to replace something inside the phone. If I make a appointment with the Genius Bar at a Apple Store, and they fix it for a reasonable price, will I be able to JB and Unlock to run T-Mobile after they fix it? Or is there a store that can fix that near Los Angelas, California? I want to know if I would be able to JB and Unlock before I go. Also the dealer said that it was a FW problem when they tried to fix it and they said me updating to 3.1.2 is bad and that the 3.1.2 cant be JB/Unlocked. But when I updated I was able to get it to work for a week. JB and unlocked. Then it got stuck in recov mode and now it wont even turn on unless I plug it into something. After plugging it in it shows recov mode the USB and the Itunes Logo. Thanks!