This is the safest and most straightforward method. If your Nintendo Switch is connected to the internet, the console will usually download and install the update automatically.
And remember: Whether you are on version 1.0.0 or 2.0.6, your island life continues. Tom Nook is still waiting for those bells. animal crossing new horizons nspupdate 206
If you are looking for specific information on how to install this, or if you're trying to find if this patch fixed a specific bug in your game, let me know! This is the safest and most straightforward method