Download Greenpois0n RC5 for Windows to Jailbreak iOS 4.2.1 Untethered

Greepois0n RC5 for Windows has been released by Chronic Dev Team. Windows users can now also jailbreak their compatible iOS devices on 4.2.1 firmware. MAC version of Greenpois0n RC5 was already out and is compatible with iPod Touch, iPad, and iPhone.

Greenpois0n RC6 is already being prepared which will jailbreak Apple TV 2 on iOS 4.2.1. You can follow the instructions already posted here.

Download Greenpois0n RC5 for Windows [Mirror Link]