Unlock iOS 4.0.2 using Ultrasn0w(Ultrasnow)
Apple released iOS 4.0.2 to fix the exploit used by jailbreakme.com. However, they did not update the baseband, which means existing version of ultrasn0w can be used to unlock iPhone. Only iPhone 3G can be unlocked as of now. Here are the steps to unlock iOS 4.0.2 using ultrasn0w(ultrasnow) Jailbreak iPhone 3G using redsn0w. See…