To put the BIOS in PCSX3, it's important to clarify that PCSX3 does not exist—you might be referring to RPCS3, which is the PlayStation 3 emulator. Unlike PS2 emulators like PCSX2, RPCS3 does not use a traditional BIOS file. Instead, it requires the official PS3 system software (firmware), which you can legally download from Sony’s official Pla