Psxonpsp660.bin Scph101.bin Scph7001.bin Scph5501.bin Scph1001.bin Jun 2026

The files listed represent different hardware revisions and one unique digital-first alternative:

: A "universal" BIOS originally from the PSP. It is highly recommended because it generally works for all regions (USA, EU, Japan) and improves compatibility across most games. The files listed represent different hardware revisions and

| Emulator | Supported BIOS Files | Notes | |----------|----------------------|-------| | | All five; prefers psxonpsp660.bin | Auto-detects region; can use multiple BIOS files per region | | ePSXe | SCPH1001, SCPH5501, SCPH7001, SCPH101 | Does not officially support psxonpsp660.bin but can use it renamed | | RetroArch (PCSX-ReARMed) | All five | Strongly recommends psxonpsp660.bin for handhelds (PSP/Vita) | | PCSX-Reloaded | SCPH1001, SCPH5501, SCPH7001 | Older codebase; no PSP BIOS support | | Xebra | SCPH1001 only | Extreme accuracy, but picky | Because the PS1 was region-locked, emulators often use

These files are extracted from different physical models of the original PlayStation. Because the PS1 was region-locked, emulators often use these to match the region of the game you are playing. Sony - PlayStation | Onion Because the PS1 was region-locked

Navigating the PS1 BIOS Maze: Which File Do You Actually Need?