Hi. I have an iPhone 3G which was previously JB and unlocked (3.1.2) and working with T-Mobile prepaid card. Long-story short... Did a software update and, inadvertently, lost the lock. Baseband (5.12...) and bootloader (5.09) now prevent any unlock. I was at least able to J/B it using redsn0w 0.9.4. It is basically just a glorified iTouch (ha). Now that this phone may be 4ever locked, could I use it with a prepaid AT&T plan? If so, how? I appreciate all your help on this. Many thanks