The file you are referring to is likely ps1_rom.bin , a unique BIOS file found within PlayStation 3 (PS3)
In the top-left menu bar, click on and select Install Firmware .
Unlike original 1990s hardware BIOS files, this version was rewritten and optimized by Sony engineers. It works as an all-in-one background architecture. Emulators like RetroArch (Beetle PSX core) and DuckStation can leverage this file to ensure games load cleanly, audio tracks play smoothly, and memory cards do not glitch. Key Advantages of the PS3 PS1 BIOS ps1rombin ps3 ps1 bios new
It is considered one of the few BIOS files that can be obtained legally by extracting it from a Sony-provided PS3 system update file using tools like Recalbox Wiki How to Use It Extraction: Extract the ps1_rom.bin from a PS3 firmware update ( PS3UPDAT.PUP
Unlike older BIOS versions (like SCPH1001), the ps1_rom.bin is specialized, region-free, and handles all game regions (PAL, NTSC-U, NTSC-J) perfectly. The file you are referring to is likely ps1_rom
For those looking to use the PS3-sourced BIOS legally, the file can be extracted from official PS3 firmware updates PS3UPDAT.PUP Recalbox Wiki Download the official firmware from Sony's support site Use a tool like the RPCS3 emulator to "Install Firmware," which decrypts the files. Locate the ps1_rom.bin within the decrypted directory (usually /dev_flash/ps1_emu/ Recalbox Wiki
(verify you have clean dumps):
The ps1_rom.bin is a dump of the actual, original Sony PlayStation 1 hardware BIOS. The "New" Discovery
For many emulators, especially RetroArch, you will need to place the ps1_rom.bin file and rename it to one of the standard PS1 BIOS names ( scph5500.bin , scph5501.bin , scph5502.bin ) and place it in the emulator's /system/ folder. Emulators like RetroArch (Beetle PSX core) and DuckStation