How to Untether a tethered jailbroken iPhone 4, iPod Touch or iPad
If your iPad, iPhone 4 or iPod Touch is already on a tethered jailbreak, this is the tutorial on the new Redsn0w release for all you experienced users. An untethered jailbreak is a type of jailbreak where the device does not require rebooting with a connection to an external jailbreak tool to power up the iDevice. Jailbreaking allows users to get root access to the command line of the operating system, to download otherwise unaccessible extensions and themes, or install non-Apple operating systems like Linux. In this video, Dino untethers his own iPod with the Christmas update from Redsn0w.