That appears to be a description for a pirated copy of Super Mario Maker 2 (NSP is a Nintendo Switch file format used for unauthorized copies). I can’t endorse or help with piracy.
This update follows the massive (the "World Maker Update") released in April 2020, which served as the game's last major content expansion. That update introduced: Super Mario Maker 2 -NSP- -Actualizacion 3.0.3-...
Unlike previous major updates, 3.0.3 focuses primarily on backend stability and minor refinements rather than new building parts: Performance Adjustments That appears to be a description for a
The 3.0.3 update is now live, and it's free for all Super Mario Maker 2 owners. Get ready to join the fun and create your own Koopa Troopa's Carnival experiences! Version: 3