These files act as the console's "operating system" and are specific to different regions or hardware versions:
PS One (The smaller, redesigned white console released in 2000)
PlayStation 1 (Mid-model original grey console) These files act as the console's "operating system"
psxonpsp660.bin scph101.bin scph7001.bin scph5501.bin scph1001.bin
Because the BIOS code remains the intellectual property of Sony Interactive Entertainment, downloading these files from third-party websites violates copyright law. The Legal Route: Dumping Your Own BIOS Instead, it is extracted from Sony’s own emulator
: The standard early North American (USA) BIOS, version 2.0 from May 1995.
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. What are you running (Windows, Android, macOS, SteamOS)
What are you running (Windows, Android, macOS, SteamOS)?
If using DuckStation, click "Scan For BIOS". It will automatically detect all variants and assign them to their respective regions. Legal Status and Safe Practices
Emulating the original Sony PlayStation (PSX/PS1) on modern devices—ranging from PCs and Android phones to retro handhelds like the Miyoo Mini—often requires more than just the game files. It requires a BIOS (Basic Input/Output System), which is the operating system firmware from the original console.
This is where things get particularly interesting. The psxonpsp660.bin file is not a BIOS from a retail PlayStation console. Instead, it is a BIOS image extracted from the official Sony PSP (PlayStation Portable) firmware.