ShAtter is a new jailbreak tool developed by @pod2g to allow updates while preserving the baseband and ultrasn0w carrier unlock. PwnageTool was a useful first test of a full iPod 4G jailbreak via SHAtter, but its really overkill compared to the faster tools being developed. The main use of the exploit will be for those with iPhone4’s. The only UI application on the ATV is Lowtide.app, but now the window is open for jailbroken apps of all varieties.”]
Source: https://blog.iphone-dev.org/post/1197198297/shattered-ipod-touch-4g