Extract your BIOS file into the /bios folder within your ePSXe directory.

Quick tip for ePSXe 1.9.0 users: If your plugins aren't showing up in the dropdown menu, make sure you have the zlib1.dll file in your root folder. Also, I highly recommend using the SCPH7502 BIOS if you’re playing PAL region games. Works like a charm! Key things to remember when posting:

The community has long debated the "best" BIOS for ePSXe. You have three main contenders:

⚠️ BIOS files are copyrighted. You must dump them from your own PlayStation console.

The BIOS is the "soul" of the console. While ePSXe 1.9.0 introduced High-Level Emulation (HLE) BIOS support to run games without a separate file, using an official BIOS is strongly recommended for better compatibility and stable memory card support.