GreenPois0n Untethered Jailbreak for iOS 4.2.1 [Video]

Chronic Dev Team has released the video that demonstrates the iOS 4.2.1 untethered jailbreak
Much credit goes to developer p0sixninja from Chronic Development team.

You can also try RedSn0w 0.9.7 to jailbreak iOS 4.2. But redsn0w 0.9.7 untethered jailbreak needs SHSH blobs.

This is the video released by Chronic Team

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