Downloading BIOS files from the internet is technically a legal gray area. The official stance of the is that you should dump these files from your own physical Xbox console If you'd like, I can help you with: compatibility list for specific games. The steps to convert standard ISOs to xiso format. Troubleshooting graphics settings for better performance. How would you like to proceed with your setup Original Xbox Emulation Ultimate Guide - XEMU Emulator
To get xemu running, the BIOS is just one piece of the puzzle. You will need a total of four specific system files: