To reset your Nokia Mediamaster 9902 S, do the following: Using the remote control, switch off the Nokia Mediamaster 9902 S. The time is shown on the display. Now press and hold the Program+ button on the Mediamaster 9902 S. Keep holding the Program+ button and press the Program- button as well. Keep both pressed until “CUSt” appears on the display. When you release the two buttons, a message (Pull The Cord) appears on the display. Remove the power cord from the socket, wait five seconds and then plug it in again.