To summarize: The filename is a bait. The actual update for Just Dance 2021 on Switch is small, stable, and only available via Nintendo servers or legitimate CDN downloads.
The only 100% safe way to update your game is through the official console interface. just dance 2021 nspupdate v327827644899rar work
The file just dance 2021 nspupdate v327827644899rar refers to a specific for the Nintendo Switch version of Just Dance 2021 . This update is typically used for installation on modded consoles using custom firmware (CFW) like Atmosphere . Technical Details & Compatibility Version Number: v327827.644899 . To summarize: The filename is a bait