If you’re like me and you didn’t really look into this much, you proably were left scratching your head, or just overwhelmed with the XBMC forums trying to find something that applied to you.
What I’ve had were some issues with XBMC (v 10.0-9), some crashing as well as a constant nagging scrapper issue.
So I decided to find a solution to update to a nightly build (for better or for worse).
Luckily after not too much searching, I found the proper section:
(Remember you need to have a jailbroken Apple TV2! And XBMC installed with Cydia prior to doing this).