: The BIOS is proprietary code owned by Sony. Downloading it from "ROM" or "abandonware" sites is technically copyright infringement, even if you own the console.
While PCSX2 supports various BIOS versions from different regions (Japan, Europe, USA), many users prefer USA v2.30 because: Pcsx2 Bios Usa V2.30 Download
By default, PCSX2 looks for BIOS files in Documents\PCSX2\bios . : The BIOS is proprietary code owned by Sony
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