How to use freebsd-update to update your FreeBSD kernel and world system

Information

https://www.freebsd.org/doc/en/books/handbook/updating-upgrading-freebsdupdate.html

Keep in mind, if you have a custom kernel that you need to upgrade your kernel manually!!!

Usage

The freebsd-update(8) utility supports binary upgrades of i386 and amd64 systems running earlier FreeBSD releases. Systems running 7.[01234]-RELEASE, 8.[01]-RELEASE, 8.2-BETA1, or 8.2-RC[123] can upgrade as follows:

During this process, FreeBSD Update may ask the user to help by merging some configuration files or by confirming that the automatically performed merging was done correctly.

The system must be rebooted with the newly installed kernel before continuing.

After rebooting, freebsd-update needs to be run again to install the new userland components:

At this point, users of systems being upgraded from FreeBSD 7.4-RELEASE or earlier will be prompted by freebsd-update to rebuild all third-party applications (e.g., ports installed from the ports tree) due to updates in system libraries.

After updating installed third-party applications (and again, only if freebsd-update printed a message indicating that this was necessary), run freebsd-update again so that it can delete the old (no longer used) system libraries:

Finally, reboot into 8.2-RELEASE: