Bios - Scph 70004

If you are using an emulator like on a PC, Steam Deck, or Android device, the software cannot run games on its own. It requires a "dump" of a real PS2 BIOS to legally and technically function. The SCPH-70004 BIOS is highly sought after because:

A standard PS2 BIOS is usually exactly 4MB (4,194,304 bytes). If yours is smaller, it’s a bad dump. scph 70004 bios

Even though this is a PAL BIOS, most modern emulators allow you to toggle the "Fast Boot" option, which skips the regional check and lets you play NTSC games at 60Hz without issues. Troubleshooting the "Black Screen" If you are using an emulator like on