How to setup Xemu
You will need
Xemu
Necessary files
ROMs
Redump Repair
Pre-ROM steps
Put the emu & necessary files into one folder
Optional: You can make a dummy file called xemu.toml in the same folder to make it a portable program
Open your Settings, go to System
Select MCPX Boot ROM
to the file in your Boot ROM Image
folder
Set Flash From (BIOS)
to the file in your BIOS
folder
Set Hard Disk
to the file in your Pre-built Xbox HDD image
folder
Setting up ROMs
(assuming you don't dump them yourself)
Download a ROM
Select the ROM in Xemu, then press ctrl+R to reset the emulation
If the ROM doesn't work, run it through Redump Repair, selecting the ROM and its output location