Owners of the now-previous (the "720p black" or "ATV2") AppleTV box now have an option of jailbreaking the device in a limited way, even if it has been upgraded to the newest 5.0 (iOS 5.1) software. FireCore has updated it's Seas0nPass jailbreak tool and aTV Flash (black) software to work with the new jailbreak, which allows users to retain the advantages of the Apple TV 5.0 software while adding various unofficial plug-ins such as Last.fm and NitoTV for additional content.
