The System Updates tab of the PC-BSD Update Manager utility, seen in Figure X-XX, allows you to easily apply security patches and update system drivers.
Though the installation of updates is highly recommended as they make your system more secure, add more functionalities and fix bugs, these updates are not mandatory; you’re free to download and install (a selection of) them.
Select the online update(s) you wish to install, and click the "Install selected updates" button. You can watch the update's progress as seen in Figure X-XX:
The patches will now be downloaded and applied to your system. If the patch requires a reboot you will be notified to do so after the patch has been installed. When the installation of the update(s) has successfully completed, the Installer will notify you of this with either "Updates successfully installed" or "Updates successfully installed! Your system will need to reboot to finish". In the latter case, clicking the OK button won't reboot the PC automatically. Finish whatever you're doing and reboot the computer at a convenient time manually.