Nov 2007 Xbox 360 HD DVD Player Update...

The Nov 2007 HD DVD Update for Xbox 360 HD DVD Player is now available for download via Xbox Live. After the update has been installed, the HD DVD player application should now be version 2.0.4641.

This update involves improvements in title compatibility (such as Hot Fuzz HD DVD/DVD combo) and network functionality.

Instructions on how to download the update via Xbox Live can be found on this website.

Source: Andy Pennell's Blog