I purchased a used Caliber P-3600 nagivation system. It only has maps for the U.S. loaded on the SD card. The manual states that maps for Canada are available on the DVD but unfortunately the unit I bought did not come with a dvd. I am trying to obtain a copy of this software so that I can create a SD card that has maps for both the U.S. and Canada. I have tried to contact custumer support but so far no response