Xbox 360 not updating from usb
NOTE: Microsoft stopped updating their backwards compatibility for original Xbox games years ago.
If your firmware is very old you can try updating it, but if it doesn't work after that, it never will.
Step 3 – Plug the USB drive into the Xbox 360 console’s USB port and restart the x Box.
Step 4 – Choose the “Yes” menu option when prompted to update the console software.
Some of the common problems that game players experience that indicate the need to check for available updates include the dashboard themes not working or appearing on the console display, missing avatars, or the kinetic sensor not working. Click Yes, when you are asked to update the console. When the console restarts, the installation program will then start automatically. When the console restarts, the installation program will then start automatically. Click save save to save the .zip-file with the update for your console to your computer. If you use Windows XP, Windows Vista or Windows 7 - Dobbeltclik the .zip-file to unpack it. Insert an empty writable cd or dvd in your computer. Copy the content of the .zip-file to the root on the cd or dvd, Choose write to (burn) the files to the disc. When the files are burned to the disc - Insert the disc in your Xbox 360-console.