You may see references online to a “new SCPH-90006 BIOS link” or “final PS2 BIOS.” This does refer to a newer BIOS version (v2.30 is the last official release). Instead, it refers to:

After installation, you'll be able to choose which BIOS file to use for each game. A good rule of thumb is to select the BIOS that matches your game's region.

Required for North American game releases. Popular versions include SCPH-39001 and SCPH-70012.

Boot the emulator without a game loaded ( System > Start BIOS ). This takes you to the classic PS2 main menu, where you can enter the configuration screen to change the system language. If you want to optimize your setup further, let me know:

Open your PCSX2 installation directory and look for a folder named bios . If it doesn't exist, create one manually.

Do not use the 90006 BIOS for older games like Metal Gear Solid 2 or Gran Turismo 3 . Those games were coded before this BIOS existed and sometimes have minor timing glitches. Keep a 39001 (USA) or 50000 (JPN) BIOS for legacy titles.

Note: Actual hashes vary per preservation project; always verify against known good dumps from Redump or PCSX2 forums.