Up until now, most folks have had to resort to using Turbo SIMs or walking into shady back alleys to get their iPhones unlocked. The Dev Team has been hard at work so you can enjoy carrier freedom with your iPhone 3G (not the iPhone 3GS!) and, you know, wander off to T-Mobile (or anywhere GSM is available if you’re a travel junky). As usual, ultrasn0w is made to be easy enough for grandma to use. Just follow the simple few steps that the Dev Team has laid out and you should be good to go! We’ll remind you once more not to do this on the iPhone 3GS — S support is still forthcoming where jailbreaking and unlocking is concerned. Oh and as always, perform these hacks at your own risk.
