iPhone OS 3.0.1 has been released to fix SMS exploit which could remotely control the victim’s iPhone. This guide will help you unlock your iPhone with the latest iPhone OS 3.0.1 firmware using ultrasn0w. This unlocking guide applies to iPhone 3G and iPhone 3GS only. iPhone 2G users can simply follow the guide I posted here to jailbreak and unlock with firmware 3.0.1.
