You are required to dump the BIOS from your own physical PS2 console.
When searching for "PCSX2 rar," you often encounter third-party file-hosting sites. These versions can be outdated, bundled with malware, or missing essential components. To ensure your system stays safe, you should always get the emulator directly from the official source. 1. Download the Official Version
When prompted, select the folder where you saved your BIOS file.