: Used in v1.0 Xbox consoles; it uses an RC4 algorithm to decrypt the second bootloader. MD5 Checksum : d49c52a4102f6df7bcf8d0617ac475ed .

The only officially supported method for legality is to dump the ROM from your own physical Xbox. Because the MCPX ROM "hides" itself immediately after execution, you must use a hardware exploit known as mcpx-attack .

Due to copyright laws, emulator developers do not bundle this file with their software. You have three primary ways to obtain it:

: You flash a modified BIOS that utilizes an execution flaw to "trap" the CPU before the MCPX ROM can be disabled, allowing you to read its contents to a file.

: A modded Xbox, a custom Cromwell BIOS, and the mcpx-tools suite.