ok i have an iphone 8gb which has been hacked from 1.1.1 to 1.0.2(1c28) if i mess up using jailbreak and have to reset my iphone how do i get out of the at&t insert at&t sim card and back to 1.0.2 ? thanks in advance.
Depends upon the computer you're using to perform these changes. Mac / PC ? Check out the 'Guides' at the top left of the page. All the iPhone goodness a guy / gal could want is there.