Other reasons you would want to do this upgrade is so your xbox would play more file formats. My old dashboard would not play .mp4 and .mkv files at all. It would just freeze. This update fixes that problem.
***Important note, if you do not have a back up of your xbox then do so now. Use the xboxhdm file kit and make a boot disk for your xbox so if you ruin your mod then you can rebuild it and no harm will be done. That will only be needed if you loose power during the file copying process not that ruining your xbox is a sure thing but it is nice to have a back up none the less. Also if you have any questions about this or anything pertaining to xbmc for the xbox just let me know and i will clarify as i have already done everything you can for xbmc for xbox and have encountered problems and fixed them. Don't hold me responsible if you mess your xbox up. That being said lets do this.