PCSX2 expects or a folder with ROMs. For a USA V12 console:
Download the latest release of PS2DUMPER and copy its executable ELF file onto your USB flash drive. scph-70012-bios-v12-usa-200.bin
Understanding the SCPH-70012 BIOS (v12, USA, v2.00): The Ultimate Guide to PS2 Slim Emulation PCSX2 expects or a folder with ROMs
Note: I assume you want a detailed, actionable walkthrough about the SCPH-70012 PlayStation (PS1 SCPH-70012) BIOS image named "scph-70012-bios-v12-usa-200.bin" — what it is, risks, legal considerations, compatibility, verification, how to prepare and use it with emulators or hardware, and troubleshooting. Below is a practical, step-by-step column-style guide. and troubleshooting. Below is a practical
If you want to run PS2 games legally without a proprietary BIOS, here are your options: