February 18, 2011
We told you about Dev-Team’s release of PwnageTool 4.2 yesterday. Here’s the full tutorial to Untethered Jailbreak iOS 4.2.1 using a Mac computer. If you have already jailbroken your iPhone 4 using Greenpois0n then you don’t need to jailbreak again. The advantage of PwnageTool over Greenpois0n is that it preserves your baseband and Ultrasn0w unlock.
November 30, 2010
As you might have already heard the Ultrasn0w iOS 4.2.1 unlock has been released and the iPhone 3G users benefit the most. The Jailbreak + Unlock process may look hectic and confusing at first glance but it actually is very simple and anyone with no jailbreaking experience can do it using this guide.