The same “The following packages have unmet dependencies” thing with mobilesubstrate
I noticed a buddy’s 5.0.2 (iOS 5.1.1 - 9B830) ATV showed XBMC and Plex directly in the FireCore “Maintenance” window under 3rd Party apps, so I took had Seas0nPass 0.8.8.10839 build me a 5.0.2 IPSW and had a happy ending.
the 5.0.2 did do the symbolic link of /Applications linked to /private/var/Applications
… and XBMC did show up on the FireCore “Maintenance” window, so I never had to install NitoTV to get XBMC 12.0. I’m finding that the latest “Media Player” does a pretty decent job of serving up the media without having to launch XBMC, so I’m playing with both right now.