You need to sign-on to LIVE first. If your X360 don’t have NXE yet, it will update first. I’m also using DiGi EDGE. It will take around 1 hour. Then try to play avi or mp4 file & your console will attempt update codec. Select yes & it will install in few minutes. If you are already update codec before NXE update, you need to re-download codec back after NXE installed since it will lose.