OK I've been doing a bit of research on this but couldn't find anything concrete. I'm a bit out of the jailbreaking community and not too sure what the current lingo is. I jailbroke it at 5.0.1 and then didn't get around to upgrading because the new jailbreak wasn't available then I kinda forgot to do it etc... Anyway, I want to unlock my current iPhone 4s so that it can be sold as an unlocked device. This obviously means that the new owner will be restoring it/putting his own profile on it etc. Which tool do I need to use to do this? Or is it even possible?