On Windows systems:
Go to C:/Program Files/Plane Shift Crystal Blue/ In that file you will find an Up Date icon (Plane Shift Updater), along with a Set Up Icon (Plain Shift Set Up), Web Site Icon and Uninstall, and Player guide.
Click on the Update Icon, it will open up another window which will tell you how to go from there.
This may require at least two updates. When I first installed my game I was prompted to restart the Updater, I ran it a third time and sure enough more stuff was updated.
Az