All guide to jailbreak iOS 4.0.1 firmware on iPhone 4, iPhone 3GS, 3G and iPod Touch 3G, 2G (MC, non-MC). JailbreakMe 2.0, the new userland jailbreak by Comex can jailbreak 4.0.1 firmware on all iPhones and iPod Touches including New BootRom devices.
Jailbreak iOS 4.0.1 Firmware
Follow the Guides linked under your concerned device to jailbreak it with JailbreakMe 2.0.
Jailbreak iPhone 4
Jailbreak iPhone 3GS
Jailbreak iPhone 3G
Jailbreak iPod Touch 3G
Jailbreak iPod Touch 2G
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