THANKS for the german_lang. It's identical to mine. So the missing ShiftKEY function must lay in keyboard.lua.
Well I would give it a try, if I had a keyboard.lua (its within data.zip/ui_igo/common/UI/ ) from igo 8.5 that apparently has a the ShiftKEY function.

I don't get Igo Primo 1.2 to work with my Zenec nc2011d device.