The latest version for is v2.0.0 , released in November 2021. This major update added key features like split-screen multiplayer and a relay race mode. Update Highlights
Once the software is updated, connect your physical kart. The system will prompt a firmware update for the kart's hardware to match the new software version. Nintendo Support Notes on "NSP" Versions If you are looking for an Mario Kart Live- Home Circuit Switch NSP UPDATE
🏎️ Mario Kart Live: Home Circuit – New NSP Update Released (v1.1.0) Mario Kart Live: Home Circuit The latest version for is v2