If you have already installed RetroArch, ensure you have run it at least once to create the necessary folder structure. You can verify or change this path within RetroArch by navigating to > Directory > System/BIOS . Common Required BIOS Files
For on the PS Vita , BIOS files are necessary firmware components that allow specific cores (like PlayStation 1 or Sega CD) to function correctly by mimicking original hardware. Key BIOS Locations & Setup bios files for retroarch ps vita link
Look for "RetroArch BIOS Pack" or "Full BIOS set" on reputable archive sites. If you have already installed RetroArch, ensure you