Green pois0n is a Jailbreak solution for iOS 4.2.1, just released by Chronic Dev Team. It can be used to Jailbreak iPhone, iPad, iPod, and Apple TV. The steps to use Green pois0n for Jailbreaking in Windows are described below. Steps: Download Greenpois0n from http://www.Greenpois0n.com Now run the Greenpois0n application. Then connect the iPad to