February 10, 2011
We have already shared how to jailbreak and unlock iOS 4.2.1 on Mac using greenpois0n and here is quick tutorial on how to Jailbreak unlocked iPhone running iOS 4.2.1. Greenpoison rc5 beta 4 will let you get an untethered jailbreak. You can download the latest version of GreenpoisOn here. Step by step guide to Jailbreak [...]
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.
![How to untethered Jailbreak iOS 4.2.1 using GreenpoisOn Beta 4 [Windows]](http://www.callingallgeeks.org/wp-content/themes/thesis_182/custom/scripts/timthumb.php?src=http://www.callingallgeeks.org/wp-content/uploads/2011/02/greenposison1_thumb.png&h=125&w=125&zc=1)
![How to Jailbreak and Unlock iOS 4.2.1 on iPhone 3G using PwnageTool [Mac]](http://www.callingallgeeks.org/wp-content/themes/thesis_182/custom/scripts/timthumb.php?src=http://www.callingallgeeks.org/wp-content/uploads/2010/11/jailbreak-iphone-421-pwnagetool-11.png&h=125&w=125&zc=1)
