Last night I saw an upgrade to my DSM-520 offered when I turned it on and I accepted. It took a fairly long time to process. Now the remote does not work . The screen shows the D-link screen saver with the D-link logo moving across the screen . In the center of the screen is a green square containing a black segmented circle. When I turn off the DSM-520 and turn it back on there is no change. What do I do now?