For the new Xbox 360 exploit? Achieves essentially the same thing as JTAG'ing, except it works on all units (except Xenon) with any dashboard version, including the new slim models. What's better? Microsoft can't fix the exploit through software updates, which means it's here to stay. Unless they somehow find a way to prevent it through hardware revisions on newer consoles (which is extremely doubtful, since the exploit is based off the inherent nature of the consoles' hardware).