Xbox Emulators (Size: 111.6 MB)
MednafenX-NES.v8 - NES Emulator
NeoGenesis - Sega Genesis/Megadrive/32X/SegaCD/MegaCD Emulator
PCSXBox v20 - Playstation Emulator
Surreal64_XXX_CE_B5.3 - Nintendo 64 Emulator
ZsnexBox.2.99b2 - Super Nintendo Emulator
Each have been tested and are working. They are the most up to date emulators for the original xbox I have found. Each has a readme and are in their respected folder.
simple FTP to your xbox and upload their folder into the xbox's game folder. if for some reason they wont upload shorten the folder name.