– This usually indicates a corrupted file download. Delete the update via system settings, re-download the NSP from a reliable source, and reinstall it. If you want to optimize your gameplay further, let me know: Which CFW and installer you are currently using?
Note: Installing NSP files requires a modified Nintendo Switch running custom firmware like Atmosphere. Obtain the Super Kirby Clash Update NSP file.
The most significant software maintenance occurred shortly after launch: