Psxonpsp660.bin Scph101.bin Scph7001.bin Scph5501.bin Scph1001.bin Jun 2026
Go to Settings > BIOS Settings, and look at the "BIOS Directory" path. Place your files there, or use the "Copy BIOS to Directory" button inside the app.
RetroArch (Beetle PSX/PCSX Rearmed) and DuckStation.
The scph5501.bin is a sought-after BIOS for enthusiasts who want a later, potentially more polished version of the original firmware. Interestingly, some emulator documentation notes that certain later models (like the SCPH-7003) share the same BIOS as the SCPH-5501, highlighting how Sony reused and refined existing code. Its MD5 checksum is . Go to Settings > BIOS Settings, and look
The Ultimate PS1 BIOS Guide: Decoding psxonpsp660.bin, scph101.bin, scph7001.bin, scph5501.bin, and scph1001.bin
Late-lifecycle "Fat" PlayStation (SCPH-700x series) Region: NTSC-U (North America) The scph5501
, Beetle PSX, or DuckStation—will either fail to launch games or run with reduced compatibility and accuracy. Function and Compatibility
Without the correct region BIOS, PAL games may run too fast (60 Hz) or fail to boot. The Ultimate PS1 BIOS Guide: Decoding psxonpsp660
The PlayStation (PS) series, developed by Sony Interactive Entertainment, has seen numerous revisions and updates since its inception. Each model, from the original PlayStation to the PlayStation Portable (PSP) and subsequent consoles, has required specific firmware or BIOS (Basic Input/Output System) to operate. The files you've listed appear to be related to the firmware or BIOS of early PlayStation and PSP consoles.
This file is not from a retail PlayStation console. Instead, it is extracted from Sony’s own emulator used on the PSP to run PS1 Classics downloaded from the PlayStation Store. It is highly optimized, fast, and very compatible with almost all games. Unlike console BIOS dumps, psxonpsp660.bin has no region locking and includes additional patches for screen scaling and save state compatibility.
This ruling created the legal precedent that reverse-engineering a BIOS for the purpose of creating an emulator is not copyright infringement. However, . The court's ruling covered the process of copying, not the products (the BIOS dumps) being shared.