Nintendo's official version numbering for Mario Kart 8 Deluxe is notable. As of the final Booster Course Pass release, the definitive version number is 3.0.0. Subsequent patches (3.0.1, 3.0.2) were released, but many dataminers argue that 3.0.3 does not officially exist as a public release in all regions. If you find a file labeled 3.0.3, it might be:
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The update 3.0.3 for Mario Kart 8 Deluxe is aimed at improving the overall stability and performance of the game. While specific details about the update are scarce, players can expect the usual enhancements to the game's online features, improvements to character and track performance, and possibly fixes for known issues. Mario-Kart-8-Deluxe-Update-3.0.3.NSP.rar