In the world of ROM preservation, "clean" always beats "trimmed." Keep your ROMs whole, keep your headers intact, and you’ll never be blocked by missing binaries again.
It means the emulator or loader is looking for (often called dsi_bios.bin , dsi_firmware.bin , etc.) to properly run DSi-enhanced or DSi-exclusive games, but those binary files are missing or corrupted. The Dsi Binaries Are Missing Please Obtain A Clean Rom
Most loaders allow you to bypass the error by pressing a button (often 'A' or 'Y') to launch the game in In the world of ROM preservation, "clean" always