I have a falcon jtagged console and have upgraded the dash to 14719, and after flashing the USB xbox upgrade over the top of it I now have all my avatars etc. Everything works fine, games from an external hdd and having LT3 that still works fine, only problem I have is it now wont play avi,s/mp4's anymore. They worked fine before the upgrade, I have installed the media upgrade (only one I could find was from 2011). Is there a newer media upgrade or am I missing something??
Short of re-upgrading I am stumped.