Samsung begins to push a software update for Galaxy J7 (2016) and Galaxy C9 Pro smartphones. The update will carry March month security patch for both handsets. For galaxy c9 pro the patch update comes in C900FDDU1AQC32 (build number). While the build number for galaxy j7 (2016) model will be J710MNUBU2AQC1. Along with this security patch update it will tweak device performance and bug fixes.
As usual Samsung rolled out the software update in phases via OTA. The firmware will be available to download on priority basis. If the update not arrived for your device then check for manual update from Settings > About device > System updates. If your device is eligible you will get the OTA update notification. Else stay calm and wait for your turn to receive the software update.