Chronic Dev Team has finally released the Windows version of Greenpois0n untethered jailbreak tool for iOS 4.2.1. With this latest version you will not have to worry about tethering your iPhone, iPad or iPad Touch after restart, as it will retain the Jailbreak. So if you are on previous iOS 4.2.1 jailbreak(tutorial), we suggest you to use the latest Greenpois0n for an untethered jailbreak.
Download Untethered Jailbreak for iPad, iPhone and iPod Touch (iOS 4.2.1)
Backup your device before starting with the jailbreak.
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