Greenpois0n
Greenpois0n jailbreak tool gives the possibility to perform an untethered jailbreak of iOS 4.2.1 from Windows and macOS. Use this tool to jailbreak iPhone 3GS, iPhone 4 GSM, iPhone 4 CDMA, iPod touch 2G, iPod touch 3G, iPod touch 4G, iPad, iPad 2, and iPhone 4S. Download greenpois0n 1.0 RC6 for Windows and Mac.