Its Christmas morning and then this message appears:
This Emby Server needs to be updated. To download the latest version.
Then it dumps you off of the server.
Currently running:
Android: 3.1.73
Linux Server: 4.2.1.0
Its a present i suppose.
This is how to manually update. It's actually quite simple. If you're all the way back on 4.2.1 I'd recommend checking the dependencies as well since I'm sure there's been a few new ones. If it were me, I'd just force re-install all dependencies, easier that way than checking them one at a time.
See the list of dependencies here.
https://emby.media/freebsd-server.html
So I'd do it like this:
service emby-server stop
pkg update
pkg upgrade
pkg install -f mono libass fontconfig