Samsung has started rolling out the January 2025 update for the Galaxy Note 20 and Note 20 Ultra in Europe. The units have already received it in the US recently. The download package size of this update is 246.75 MB.
Galaxy Note 20 January 2025 update details
The new software comes with build versions N981BXXSFHXL1, N980FXXSFHXL1, N986BXXSFHXL1, and N985FXXSFHXL1 for the Galaxy Note 20 5G, Galaxy Note 20 4G, Galaxy Note 20 Ultra 5G, and Note 20 Ultra 4G, respectively. These updates rolled out in batches, so if your device is not showing it yet, wait for a few hours or days; it will be available on your model. The January 2025 update carries a bunch of fixes for the Galaxy devices, including 5 critical and 24 high-level vulnerabilities.
Apart from the security, it also improves the system stability. Although no new features or functionalities are mentioned in the changelog, it is still important to install it as it may fix some unknown bug.
However, these updates should not affect your device data, but you can back up important files before installation as a security measure. To check the latest firmware availability manually, head to Settings » Software update » Download and install.