On different Live enabled DVD's are ALWAYS update.xbe and dashonline.xbe.
MS forces gameproducers, which want to use XboxLive that they also PUT those files on DVD.
The reason behind this is (I guess), that XboxLive wasn't available due to lauchjing of Xbox. almost 1,5 years after the first boxes were sold, this started in the US.
So basicly the first Dashboards didn't have support for Live. It wasn't there.
Games came with this support, but to make sure every Xbox could make use of Live; the dash must be updated to a good working version.
But....., If you don't have a dhash wich supports online updating.... even worse, has bugs to connect online trough www...., then old xboxes never could use live!
So the games are supllied with those dashboards, so that updating is always possible when you start a game and don't have connection to Live.
and yes; I found already an update.xbe dash on a retail DVD (copied to E:\), WITH the flag load_from_hdd and Load_from_dvd!
So, Idiots, please, please make a new version that scans the whole HDD, all partitions; including F: and G: