This is your Complex_4627.bin (or Complex_4627v1.03.bin ).
The official Xemu GitHub and website . They provide a legal warning: "You must dump your own BIOS from your original Xbox console." Xemu Complex 4627 Bios
Visit the official website at xemu.app and download the latest version for your operating system (Windows, macOS, or Linux). Extract the archive to a convenient folder. This is your Complex_4627
Offers a highly stable environment for running prominent commercial games, such as Halo: Combat Evolved and Halo 2 . Technical File Requirements Xemu Complex 4627 Bios