well i got all of halo 2 on my hard drive and i got all the new maps downloaded on the xbox off xbox live and they work on tne original halo disk but the backup dosnt even see them i am not new to the modded xbox scene mine runs xbmc and has a 250 gig seagate hd and its a softmod
does your mainmenu say 1.1 or 1.5 when it says press start? if it doesn't I can help ya out if it does I dunno. Get back @ me.