That is version 18.2. If you load V22 or higher it will take you to the latest version for the MkIII, which is 3-1/63. The language packs and settings will not change. Those are coded into the nav unit and will not change unless the dealer recodes the unit.
There are risks in doing an update on your own, and more so on a MkIII than a MkIV. However, issues are rare.
