Quick tip: Updating FreeBSD with freebsd-update
The freebsd-update application is a great tool for updating or upgrading quickly. It’s quite easy to use and other functionality, too. You should always update if there are any FreeBSD security issues that affect your configuration.
First you want to run the following commands as root:
# freebsd-update fetch && freebsd-update install
Then, if all goes well you want to reboot:
# reboot now
And your update is completed! Make sure everything starts up that should and works as you expect it to. This process is easier than building from source, but you don’t get the same performance increase.
For virtual images and lower end computers it may be more advantageous to build the entire OS or at least the kernel from source and reduce unnecessary functionality.