Rename the file to scph10000.bin exactly (case-sensitive on some Android systems). Avoid spaces or special characters.
It typically appears as a 2.1 MB to 4.0 MB .bin file. How to Use SCPH10000.bin on Android scph10000.bin download for android
Load any PS1 game (in .bin/.cue , .chd , or .pbp format). If you see the iconic Sony Computer Entertainment startup screen with the black background and white text, followed by the silver PS logo, your BIOS is working perfectly. Rename the file to scph10000