Egorus, I checked on my R700 (which has the Same Computer system as the 300) and managed to change from english to German And BAck Again, You do it in the following way, go to service which is the second button from the Bottom of the Column on the Right edge of the Keypad, set which is F3, and the first setting should be language. maybe your machine doesnt allow but that is how it is done ont he 700 maybe this will help