• File name: mcpx_1.0.bin
• MD5 checksum: d49c52a4102f6df7bcf8d0617ac475ed
• Note: A correct dump should start with 0x33 0xC0 and end with 0x02 0xEE.

Due to unimplemented DRM functions, Xemu currently cannot boot games with an unmodified retail BIOS.

• Recommended file: Complex_4627.bin (modified retail BIOS)
• Users have reported the most success with the "COMPLEX 4627" BIOS

This contains the emulated hard drive that Xbox needs to store game saves and system files.

• You can use a pre-built 8G Xbox HDD image with only a dummy dashboard
• Format: QCOW2
• Typical filename: xbox_hdd.qcow2

Redump ISOs are accurate dumps of original discs but need processing before use with Xemu.

1. You can use utilities like xdvdfs, dd, or use the webapp tool provided by Xemu
2. After extraction/conversion, the resulting file can be used with Xemu

Extract-XISO is a utility for creating, modifying, and extracting XISOs.

# Clone repository
git clone https://github.com/XboxDev/extract-xiso.git

# Build the tool
cd extract-xiso
mkdir build && cd build
cmake ..
make

# Rewrite an ISO to XISO format
./extract-xiso -r ./game.iso
                                

Xemu stores its configuration in a file named xemu.toml located in:

• Windows: In the same directory as the executable or in %AppData%\xemu\xemu\
• Linux: ~/.local/share/xemu/xemu/ or ~/.var/app/app.xemu.xemu/data/xemu/xemu/ (Flatpak)
• macOS: ~/Library/Application Support/xemu/xemu/

You can manually edit this file with a text editor to fine-tune Xemu's behavior for advanced configuration.

GPU Selection

For systems with multiple GPUs:

• Xemu automatically tries to use your high-performance discrete GPU
• Windows: Configure GPU preference in Display settings → Graphics settings
• You can verify which GPU is being used by checking the xemu.log file

Driver Optimizations

• NVIDIA GPUs: Disable "Multi-threaded Optimizations" in NVIDIA Control Panel, as this feature has been known to negatively impact Xemu performance
• Set Power Management Mode to "Prefer Maximum Performance"
• Consider updating to the latest GPU drivers

CPU Optimizations

• Linux: Set CPU scaling governor to performance mode with:

  cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

  If you see "powersave" printed, switch to the performance profile with:

  echo performance | sudo tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

• Windows: Set power plan to "High Performance" in Power Options
• Close background applications to free up system resources
• For laptops, ensure you're connected to AC power to prevent CPU throttling

Shader Caching

Enable "Cache shaders to disk" in Machine → Settings → General for improved performance on subsequent game launches.

The Xbox EEPROM contains console-specific settings that can impact game compatibility and features:

• When first run, Xemu generates a default EEPROM configured for USA region
• You can modify EEPROM settings using an external tool like XboxEepromEditor
• Important EEPROM settings:
  • Region: Affects game compatibility (USA/PAL/Japan)
  • Video Mode: Controls output resolution (480p/720p/1080i)
  • Display: Standard 4:3 or Widescreen 16:9
  • Audio: Disable surround sound if audio issues occur
  • MAC Address: Important for networking (must be unique for multiplayer)

Xemu supports various command line arguments for advanced users:

• Launch games directly: xemu.exe path/to/game.iso
• Specify alternate MCPX: --mcpx=path/to/mcpx.bin
• Specify alternate BIOS: --bios=path/to/bios.bin
• Specify alternate HDD: --hdd=path/to/hdd.qcow2
• Additional QEMU arguments can be passed through for advanced configuration

• If settings don't persist, check file permissions on Xemu's configuration directory
• If Xemu crashes on startup, try renaming/removing xemu.toml to reset settings
• Check xemu.log file for detailed error messages and debugging information
• For portable installations, keep all configuration files in the same directory as the executable

• Bridges the emulated network device to one of your computer's network interfaces
• Allows connecting to real Xboxes on the same network
• Works with tunneling services

• Encapsulates network traffic in UDP datagrams
• Useful for quickly setting up a virtual LAN
• The Xemu project provides free servers you can use to play with other Xemu users

• Runs a full TCP/IP stack within Xemu with NAT
• Allows port forwarding to the virtual Xbox
• Useful for connecting to the virtual Xbox's FTP server

• Your ISO may not be dumped in a compatible way
• Try using extract-xiso to repackage your ISO
• Ensure your game format is correct (XISO format)
• For non-USA region games with auto-generated EEPROM, modify the EEPROM using a tool like XboxEepromEditor

• Ensure your system is using a Performance power profile
• If using a laptop, connect the AC adapter to prevent throttling
• Close background processes that might consume system resources
• For NVIDIA GPUs, disable "Multi-threaded Optimizations" in the NVIDIA Control Panel
• Lower the resolution scale if performance is poor

• If using Bridged Adapter on Linux and getting permission errors: sudo setcap cap_net_raw,cap_net_admin=eip 'which xemu'
• Ensure firewalls aren't blocking connections
• If a bind address error occurs, change the port number and try again, or exit and relaunch Xemu