http://ping.fm/rC6Kr Easy Untethered Jailbreak iOS 4.2.1 With GreenPois0n RC5 By TechGravy Chronic Dev Team released GreenPois0n RC5 which brings full untethered jailbreak iOS 4.2.1 for all iOS devices finally.The jailbreak step by step is quite simple and easy to follow compare with using Redsn0w 0.9.7.b6 . Actually iOS 4.2.1 already having perfect jailbreak with using latest Redsn0w 0.9.7.b6 but need iOS 4.2 beta 3 firmware and iOS 4.2b3 SHSH.Apart of it the jailbreak procedures is quite complex so not everyone can do it with easy.GreenPois0n RC5 let you jailbreak all iOS devices easily without iOS 4.2b3 SHSH. Now Chronic Dev Team released GreenPois0n RC5 with Mac version,Windows version will release later. Below is complete step by step guide how to jailbreak iOS device using GreenPois0n RC5. ---- Easy Untethered Jailbreak iOS 4.2.1 With GreenPois0n RC5 | TechGravy http://ping.fm/y6egR