May 2007 Xbox 360 HD DVD Player Update...
[May 15, 2007] Originally posted.
[May 24, 2007] Updated with link to the image file.
The May 2007 HD DVD Update for Xbox 360 HD DVD Player is now available for download via Xbox Live.
Instructions on how to download the update via Xbox Live is available via this website.
Alternatively, you could load the update with the use of an update CD or DVD. The full set of instructions on how to create the update CD or DVD and how to load the update, together with the May 2007 update image file are all provided via this link.
The update reportedly resolves HD DVD disc playback and compatibility issues. It would also include DTS output option, improved H.264 video playback and improved network functionality.