How To Jailbreak iPhone 4, iPhone 3GS On iOS 4.2.1 Using Greenpois0n [Windows]
Chronic Dev Team has just released greenpois0n to jailbreak iOS 4.2.1 for Windows for iPhone 4, iPhone 3GS, iPod Touch 4G,iPod Touch 3G and iPad. In this guide, we will take you through the step by step procedure to jailbreak your iPhone 4 or iPhone 3GS o...