Download a tool like "PS2 BIOS Dumper" and put it on a USB drive formatted to FAT32.
Using a dumped BIOS ensures that your emulator setup is stable and tailored to the specific hardware revision you are familiar with. How to Dump BIOS from your SCPH-90000 Ps2 Bios Japan Scph-90000 Download
Move these files to the bios folder of your emulator. Using the BIOS with PCSX2 Download a tool like "PS2 BIOS Dumper" and
The only 100% legal way to obtain a PS2 BIOS is to "dump" it from a physical console that you personally own. Using the BIOS with PCSX2 The only 100%
Open PCSX2, go to Config > Plugin/BIOS Selector , and click the BIOS tab. Refresh the list and select the Japanese v2.30 entry.
If the emulator says "BIOS not found," ensure the file extension is correct (.bin) and that it isn't tucked inside a .zip or .7z folder.