How "update"?
There are 2 ways:
- you download a upgrade file from here
You must be registered to see the links
, but you have to do every single step - so from R12 to R15 you need 3 steps. Advantage: you hold all your personal files (cards, MyMods...) as they are; disadvantage:each upgrade exe can completely mess up your game.
- better way: complete new download/install, then moving your complete old folders "UserData" and "MyMods" (in "mods" folder) into the new game.
That´s it. Don´t forget to reinstall if you used some of the [OPTIONAL] Mods before.
So you´re not losing any of your character cards.