: This is an update file only . It will not work unless you already have the base game ( Mario Kart 8 Deluxe ) installed in your emulator or on your system.
Specifically, "UPDATE190" indicates this is the , which was released in July 2023 to add support for Wave 5 of the Booster Course Pass DLC. Key Features of this Update (v1.9.0)
The filename refers to a pirated update file for the game Mario Kart 8 Deluxe on the Nintendo Switch .