Samsung has rolled out January 2025 security patch update for its Galaxy S21 series, including the Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra. The update is currently available for carrier-locked devices of Galaxy S21 series in the US.

The model numbers receiving the update are: SM-G991U, SM-G996U, and SM-G998U. The firmware versions for this update is G991USQSEGXLB. This security patch addresses security vulnerabilities to provide users with a more secure experience.

If the update notification has not yet appeared, users can manually check for the update by navigating to:

  1. Settings
  2. Software update
  3. Download and install.