bios folder mentioned above.bios.bin when it should just be the actual filename (e.g., scph-70012.bin).: You need files such as SCPH-70012.bin or similar. These are legally required to be dumped from your physical PS2 hardware using a homebrew tool like BIOS Dumper . 2. Locating the BIOS Folder
If you cannot dump your own BIOS, you have two legal (but limited) options: pcsx2 170 bios
Once you have a legitimate BIOS dump (a folder containing files like SCPH-70004.bin ), follow these steps for PCSX2 1.7.0. PCSX2 1