i have a xenium ice with 2.0.0 and the following bios
evox m8
4981
4983
evox m8 (blue :))
and i cannot boot these games
Full spectrum Warrior
Espn Nba 2k5 when using retail bios, or on hd
espn goes to a video, and then freezes after that
and full spectrum (when on the hd) goes instantly black, and doesnt work, but army.xbe does?

what do you think i should do?

Try clearing the cache entries on your hard drive, ie FTP to your xbox and delete any files in partitions x, y and z and also those in folder cache on your e: drive. Do not delete the folder just the entries in it.

This happened to me once and deleting these entries and rebooting allowed me to play these games again.