The Nintendo 3DS firmware can run in four different modes. NATIVE_FIRM is the native running firmware for Nintendo 3DS software (including the Home Menu). SAFE_MODE_FIRM is used for safe mode applications, such as the System Settings and System Updater. TWL_FIRM is the Nintendo DSi's native firmware and it is used for Nintendo DS/DSi backward compatibility. Finally, AGB_FIRM is the Game Boy Advance's native firmware and it is used to run Game Boy Advance Virtual Console games. The NATIVE_FIRM is different for the New Nintendo 3DS.