How to jailbreak iOS 4.2.1 and 4.2 Firmware

Compatible Devices:

iPhone 4, 3Gs, 3G, iPod Touch 4th Gen, 3rd Gen, 2nd Gen, and iPad

Tethered Jailbreaks:

iPhone 4, 3Gs NEW BOOTROM, iPod Touch 4th Gen, 3rd Gen, and 2nd Gen MC MODEL

Untethered Jailbreaks:

iPhone 3Gs OLD BOOTROM, iPhone 3G, iPod Touch 2G Non MC

Downloads:

Redsn0w 0.9.6b4:

iOS 4.2.1 Firmware: http://www.felixbruns.de/iPod/firmware/

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