Video: greenpois0n and Limera1n on iPhone 4 (Unlock / Jailbreak) | All on the iPhone, iPod touch & iPad
How to update iPhone 4 to iOS 4.1 without upgrading the Baseband and jailbreaking using greenpois0n
How to Update iPhone 4 to iOS 4.1 Without Upgrading the Baseband and jailbreaking using limera1n