So here's the story. This guy hamzah posts an unlock on his blog. Comments are all over the place, with some claiming it works and some claiming it doesn't, but I feel like nobody credible has actually tried the unlock yet to say if it works or not. Sure, a lot of people are saying that theoretically it can't work for whatever reasons, yet there seems to be a lot of people saying they've successfully unlocked. I came here to make an account at MacRumors because I know a lot of members here will be credible. Can anyone give me a definitive answer as to whether or not this unlock solution works? Has anyone at this community actually tried it out and said that it doesn't work? I'm just tired of reading bloggers with their BS "This may work but we haven't 100% confirmed it" and commenters who haven't actually tried it. I would try it but I'm worried about jailbreaking. I'm actually selling an iPhone on eBay right now and it's on iOS 5.0.1 with baseband 4.11.08, and I'm worried that if I try this and it doesn't work I won't be able to revert back to this baseband/OS and if I try to sell the iPhone on iOS 5.1 with some even newer baseband it'll sell for a lot less. If anyone can tell me how I could try this and revert back to what I have now (iOS 5.0.1 with baseband 4.11.08) I'd be more than happy to try this unlock solution because I have all the tools like the T-Mobile SIM with data and original AT&T SIM (if it works I'll cancel my eBay listing). I just need some guidance.