Assuming you have a modded Switch (V1 unpatched, Modchip, or Software mod), here is the safest method to apply the Astroneer Switch NSP update:
If you own Astroneer digitally or physically and have a standard, unmodded Switch, this is the only method you should use.
Note: This section is for educational purposes regarding how updates function on Custom Firmware (CFW). astroneer switch nsp update
If you are running a backup (NSP) of a game you own on a modded Switch (using Atmosphere or similar CFW), you cannot simply "update" via the Nintendo eShop without risking a ban. You must install the update manually.
Concept: An update is technically a separate file from the base game. You do not need to redownload the entire game (Base NSP); you only need the Update NSP. Assuming you have a modded Switch (V1 unpatched,
Switch users complained that the jetpack used the same button as the terrain tool. This update separates the bindings. You can now find "Jetpack Modifier" under Options > Controls > Advanced.
The term "NSP" refers to the file format used by the Nintendo Switch for its games and updates, similar to how other consoles have their own formats like PS4's PKG or Xbox's package formats. When an update is released for a Switch game, it often comes in the form of an NSP file that players can download and install manually, or more commonly, the update is applied automatically through the console's system update or game update mechanism. Let it Download: The Switch will download the
If there was a specific "update" you're referring to for "Astroneer" on the Switch in NSP format, it likely contained bug fixes, balance changes, new features, or content additions. System Era Softworks has been supportive of the game post-launch, releasing several updates across all platforms to improve the game and add new features.