Tutorial: iOS 4.2.1 Jailbreak iPhone 4 / 3G, iPod 4G / 3G and iPad with Greenpois0n RC5 (Mac OSX)

He only released a few hours Greenpois0n RC5 can now jailbreak iOS 4.2.1 untethered iPhone 3G / 4, iPod Touch 2G/3G/4G, iPad Wi-Fi/Wi-Fi + 3G. Greenpois0n RC5 - unlike redsn0w 0.9.7 - requires no SHSH. Whether you've had your iDevice Christmas or long, this jailbreak iOS 4.2.1 untethered is for you. The Windows version of this tutorial is available at this address.

NOTE: Greenpois0n RC5