RetroArch on PS Vita lets you run classic console cores and enjoy retro games on handheld hardware. Some emulator cores require BIOS files to run correctly (or at all). This post explains what BIOS files are, which ones RetroArch cores for PS Vita commonly need, where to put them, and how to verify and troubleshoot them—without condoning piracy.
On the PS Vita, RetroArch looks for its firmware in a specific directory. By default, you must place your BIOS files in: ux0:/data/retroarch/system/ How to get them there: on your Vita. and ensure your "Select" button is set to Connect to your PC and navigate to the data/retroarch/system/ folder on your memory card. Drag and drop your BIOS files directly into this bios files for retroarch ps vita