Master Guide: Setting Up PS Vita RetroArch BIOS Files If you’ve successfully hacked your PS Vita and installed RetroArch, you’ve likely realized that while many older consoles work right out of the box, systems like the refuse to load. Instead, you're met with a black screen or an error message.
Ensure all filenames are lowercase . For example, SCPH5501.BIN should be renamed to scph5501.bin . RetroArch is case-sensitive and will not recognize uppercase filenames. How to Verify if Your BIOS is Working bios files for retroarch ps vita link
If a game crashes despite the BIOS being "Present," you might have a bad dump. Try to find a different source for your BIOS files. Master Guide: Setting Up PS Vita RetroArch BIOS
If you’ve moved your RetroArch installation, go to Settings -> Directory -> System/BIOS to make sure RetroArch is looking in the right place ( ux0:/data/retroarch/system/ ). For example, SCPH5501