Once you have obtained your scph101.bin file, you need to place it in the correct folder for your emulator to recognize it. Using DuckStation or ePSXe Download the scph101.bin file. Open your emulator (e.g., DuckStation). Navigate to the bios folder within the emulator directory. Move the scph101.bin file into that folder.
Ensures your saves are handled properly.
A real BIOS file allows the emulator to play the original, uncompromised startup sequence when you boot a game. The Legalities of Downloading SCPH101.BIN
In the emulator's BIOS settings, refresh the list or manually target the file to set it as your default system boot sequence.
For the scph101.bin file, the legitimate MD5 checksum for the BIOS is: 6E3735FF4C7DC899EE98981385F6F3D0 . A slightly older version (4.5) exists, but version 4.4 is the standard reference in most emulator documentation. You can verify this checksum using a free tool like CertUtil (built into Windows) or other MD5 verification software.
: Some PlayStation emulators come with built-in BIOS or offer an option to download it directly through the emulator.
If you choose to download the file from the internet, you may find it in "BIOS Packs." One of the most common sources is the Internet Archive. While these packs are convenient, note that downloading a BIOS file from a site you do not own is technically a copyright violation, even if the hosting site itself is legal to access.
Once you have your verified file, you must place it in the correct directory for your emulator to recognize it. RetroArch (Beetle PSX / DuckStation Cores) Rename the file to lowercase: scph101.bin .
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Note: The exact hash for SCPH101.BIN varies by region (Japan, USA, Europe). The USA version is most common.