Hello, I just jailbroke and unlocked (T-Mobile) a used iPhone that I bought and I realized that there are some apps that can only be used in iOS version 4.1 I need to know if updating my iPhone from 4.0.1 to 4.1 using iTunes will kill my iPhone or disable my unlock. And if that will, how can I update my iPhone?
Which iPhone? ipodtouchfans.com has tons of resources on jailbreaking and unlocking. You could probably update your firmware without touching your baseband. I think 4.1 is jailbreak-able by greenpoison, limerain, or redsn0w.