Please access the links below to the D-Link support site for the updates:
http://www.support.dlink.com/products/view.asp?productid=DVX%2D2000MS
http://www.support.dlink.com/products/view.asp?productid=DVG%2D3104MS
http://www.support.dlink.com/products/view.asp?productid=DPH%2D125MS