Samsung developers unexpectedly released the November system update for the flagship smartphones Galaxy S21, Galaxy S21+, and Galaxy S21 Ultra in October.

According to the Reddit and XDA forums, the firmware came out with build number G99xBXXS3AUJ7 and weighs just over 200MB. Some device owners have already started receiving the system. In the near future, the OTA update will be available to everyone.

As for the changelog, it contains the November Google security patch that fixes some system vulnerabilities. Also, the developers have fixed minor bugs in the software. There are no coordinate changes in the system.

Recall that Samsung is currently testing the new One UI 4.0 shell with Android 12.