Sega Cd Bios-cd-e.bin Bios-cd-j.bin Bios-cd-u.bin 💯 Genuine

Designed for the Mega-CD in PAL territories like Europe and Australia. bios-cd-j.bin (Japan/NTSC-J): The original Japanese Mega-CD firmware. bios-cd-u.bin (USA/NTSC-U): Used for the North American Sega CD units. These files were used by Sega to enforce region locking