If you already have an older update (e.g., 3.0.0), you can install 3.0.3 directly over it.
As he crossed the finish line in first place, the digital crown settled on Link’s head. To most, it was just a minor version increment, a few lines of code in an NSP file. To Leo, it was the invisible foundation that made his perfect run possible. He saved the replay, knowing that in the world of Mario Kart, the best updates are the ones you feel, but never see. 0.3 update?
Communities have developed 60 FPS mods for 4-player split-screen, which traditionally drops to 30 FPS on original hardware; ensuring your NSP matches the mod version is vital for stability.