: When looking for the correct files, they are usually named scph90000.bin or ps2-0230j-20080220.bin .
Place all of them into the bios folder.
If you are looking to set up your emulator for the best possible experience with Japanese classics like Final Fantasy X International or Kingdom Hearts II Final Mix , the SCPH-90000 BIOS is the most stable and modern choice available. Always remember to support the legacy of these consoles by using your own hardware for file extraction whenever possible.
The region of the BIOS only affects region-locked games and system menus. It does not impact frame rates or resolution.
Open PCSX2, go to Config > Plugin/BIOS Selector , and click the BIOS tab. Refresh the list and select the Japanese v2.30 entry.