In case there's someone like me who can't play video files on xbox360 because of the recent dashboard update or something else, here's the solution: 1. Download and extract the optional media update zip file onto your desktop. 2. Open up usbxtafgui or any other similar programs and access your xbox usb stick. 3. Go to content\0000000000000000 and inject the FFFE07DF folder(from the optional media update.zip) into it. 4. Plug the usb stick to your console. Power it on. Enjoy. *The update is already installed so don't touch anything else that pops up (if any). For those who would prefer a video tutorial --> https://www.youtube.com/watch?v=j2ZSyK0m3OA