The NSP (Nintendo Switch Package) file is a format used for Switch game files. An update to the NSP file usually includes bug fixes, new features, and improvements to the game.

Warm Snow is a romantic drama game developed by MercurySteam and published by Aniplex. The game follows the story of a young woman named Hana who returns to her hometown after a long absence and finds herself caught up in a complicated web of relationships.

You're looking for information on the game "Warm Snow" on the Nintendo Switch, specifically regarding the NSP update and its features. Here's what I could gather: