: It uses RC4 (Version 1.0) or TEA (Version 1.1) to decrypt the next stage of the boot process.
: Initializes the chipset, sets up the Global Descriptor Table (GDT), and turns on the CPU caches. The "Jam Tables" Mcpx Boot Rom Image
Despite its size, it handles complex tasks to transition the Xbox from a "dead" state to a running machine: Wakes the CPU : It uses RC4 (Version 1