For ePSXe 1.9.0, the most compatible BIOS files are:
How to get them legally:
Critical tip: The BIOS file must be exactly 512 KB in size. If you download a 2 MB file or a .zip containing multiple files, you have the wrong version. ePSXe 1.9.0 will reject corrupted or oversized BIOS files without a clear error message. epsxe 190 bios and plugins work
The PlayStation BIOS (scph1001.bin, scph7502.bin, etc.) is copyrighted Sony code. We cannot provide direct download links, but we can tell you exactly what you need and how to acquire it legally. Sound flow:
This means ePSXe cannot see the BIOS file. CD-ROM and audio tracks:
