In the field, browse and select your mcpx-1.0.bin . Select your Flash ROM in the field below it.

effectively in an emulator, it must be paired with other specific system files: Flash ROM (BIOS) : Usually a modified retail BIOS like Complex 4627

Thus, the 1.0 in the filename is critical. Flashing a tool expecting a 1.0 dump onto a later console will either do nothing or brick the console (hard-brick, requiring external flashing hardware to recover).

Microsoft and NVIDIA produced at least three distinct versions of the MCPX chip during the Xbox’s lifespan: