A new update is available for the Galaxy Note 20 series. Specifically, Samsung has rolled out the October 2024 security update for the Galaxy Note 20 and Galaxy Note 20 Ultra in Switzerland. I think the update will soon hit other European markets.
It could take days or even weeks for other markets to get the update, as the Galaxy Note 20 series currently only receives quarterly software updates.
The latest update for the Galaxy Note 20 and Galaxy Note 20 Ultra can be identified by the baseband version ending in HXJ1. There are nothing but over 40 vulnerabilities that have been patched. Two of them are considered critical because they can cause data corruption.
To download the latest update for the Galaxy Note 20 series, open the Settings app, scroll down and select Software update, then tap Download and install.