Here is a list of known PS2 BIOS files:
Here is the collection:
The PlayStation 2 (PS2) BIOS (Basic Input/Output System) is the essential firmware required for the console to boot up, authenticate discs, and run games. For emulation on platforms like PCSX2 , these files are mandatory to recreate the hardware environment on your computer or mobile device. Why You Need Multiple BIOS Files all ps2 bios files including the new scph90006 patched
When organizing these for research or emulation, files are typically named after the model they were dumped from: Early Japanese (v1.0). SCPH-39001.bin: Common North American (v2.0). SCPH-70012.bin: Early Slim North American. Here is a list of known PS2 BIOS
Why does the emulation community need a patched version of the final BIOS? The answer lies in a subtle but infamous anti-piracy feature introduced after the SCPH-75000 series. SCPH-39001
This is the oldest Japanese BIOS. It is known to have significant glitches and poor compatibility with memory card emulation. The SCPH-90006 "Patched" BIOS