I received the NAV map update available email two weeks ago. I went to the site, entered my VIN and ESN and was informed that there was an updated map version available for my 2019 Edge ST. My maps were already at NA 1-18 so I assumed the upgrade would be to NA 1-19. I downloaded, decompressed and copied the update to my thumb drive and waited for an opportunity to install it.
The opportunity arose yesterday when we were asked if we could watch our grand kids that lived ~45 minutes away. To be sure that I would allow enough time, I started the car and plugged in the thumb drive about 20 minutes before we left. Upon starting my car, the install initialization went perfect. The install process caused several resets and intermediate complete screens during the 45 minute drive ( ~50 minutes of actual install time). When I got a complete screen that remained on the display, I drove for another 10 minutes before arriving at our destination, removing the thumb drive and performing the on/off cycle. The install appeared to have been perfect except that when I checked the NAV map version it was still NA 1-18.
I agree with the previous post that stated just because you receive a Nav map available email and the website, through VIN and ESN authentication, indicates specifically that there is an update available for your vehicle, that your vehicle may not need the update.
To prevent the waste of time and gas, the third party map supplier should have indicated the update map version available for your specific vehicle after the VIN and ESN authentication. The version of the update could also have been indicated during the install initialization on the screen.
It would appear that the third party and Ford(?) were not acting in good faith by offering 2018 and 2019 owners free map upgrades. Instead, they were simply trying to eliminate the headache in having to refund the NAV map update charge to those who were irresponsibly sold incorrect map update versions for their vehicles.