Just to follow up with F150chief’s suggestion to install the Sync3 version 3.3.
I did try both options but neither one worked. For some reason the update to version 3.4 locked up my system. I contacted infotainment.com and they were nice enough to send me a replacement APIM. Now everything is working fine.
I am reluctant to try the upgrade to 3.4 with Nav 2.20 that I tried before for fear that I’ll lock the APIM again. I’ll just live with my version 3.0 for the time being.