I was running an old version of the disc on my D3. I downloaded the update via the torrent and burned successfully to a DL and when inserted into my D3 it said updating and then it finished. However, when I go to nav it says switching to memory navi. When I try to put the old disc I was using before the update it says something like "wrong disc" did I do something wrong? When I go to the service menu in my D3 it says I am now running the 80MT firmware. I currently cannot map any address or POI or whatever just whatever what was left in the memory. Any help guys?

Reburn it using Ultra ISO at the slowest speed... 1x if you can.