Ok so I bought an unlocked jail broken phone eBay a recent time ago. Unlocked for tmobile. It was running software version 4.1 with the iPad baseband 6.15.00 now heres the the confusing part I know for a fact this phone has the toshiba chipset and the serial number states it was made in the 49th week of 2011?!? How is this possible? To my knowledge this phone should have been perminately bricked right? I would post a picture but I'm a n00b to this site and don't know how any help here? Because I accidentally update the version to 5.1.1 and I had to switch to an at&t prepaid sim just so I could use my phone. Still under a t mobile contract and want to go back to tmobile. Please help a broths out!