He renamed it: PSXonPSP660.bin → scph1001.bin (for USA) or scph7001.bin .
Here’s a that doubles as a setup guide for getting the PSXonPSP660 BIOS file working optimally in RetroArch (for PS1 emulation). The Tale of the Missing BIOS and the Lagging Shader Leo loved retro gaming on his handheld. He downloaded RetroArch, found his favorite PS1 game — Crash Team Racing — but it ran like a slideshow. Menus stuttered, audio crackled. He checked: core = PCSX ReARMed (the best for ARM devices). Still bad. Psxonpsp660-bin Retroarch BETTER
Would you like a content or a script that renames and copies the file automatically? He renamed it: PSXonPSP660