We've finally been able to solve it and update the Azoth display. Sadly the keyboard firmware has such limitations that render the whole concept useless: once we initiate the screen update the screen gets blanked and then the updated image is only shown for a very short time and then the screen gets blank again due to the next update, etc. The whole user experience is nothing but annoying flashing of the display in the end. Asus needs to improve their firmware to make it possible to provide frequent display updates from monitoring software like AIDA64.