Well, I decided to pay the cost for the CNSD-210FM upgrade for my AVIC Z120BT Nav unit. To say I was disappointed in the map content would be quite an understatement. I was hoping to get updated map data in my city and county. My street address and street have existed for 6 years and was not included in the 2011 Tele Atlas map update. Neither is the main street that has existed since March of 2010 that runs adjacent to my neighborhood. Is there a way to access the OS of the unit to see what map version is actually installed on the unit to verify that Pioneer actually put upgraded maps on