When you play Nintendo DS games on Delta Emulator , you encounter the error “Missing Required DS Files” and cannot play. Today I will guide you to fix this error in a simple way Cause of error The cause of the error on Delta Emulator is because you have not imported the DS BIOS file. We need to import 3 files bios7.bin, bios9.bin, firmware.bin Steps fix “Missing Required DS Files” on Delta Emulator Video Fix “Missing Required DS Files” error