Bios-cd-u.bin Bios-cd-e.bin Bios-cd-j.bin [2021] Official

Deep Technical Write-Up: bios-cd-u.bin, bios-cd-e.bin, bios-cd-j.bin

folder. The naming convention is strict—if you have a file named mcd_v1_10.bin

bios-cd-j.bin (Japan)

1. Overview & Purpose