Hello Everyone,
Sorry to bring up an old thread but i have some pretty exciting, if not old, news. The APIM went out in my girlfriend's edge and much like some of the earlier posts in this thread indicate, I was able to replace it with an APIM from a nav unit and now have factory navigation in my 2012 edge that did not come with it.
This process was very easy. First I located the APIM module on line via a parts locator service. Next I took the VIN number from the vehicle I would be aquiring the APIM from, and checked it online against ford's database to ensure that it had the navigation option. After the part arrived, it was as simple as opening up the dash (super easy, i promise) and replacing the computer with two clip connectors. We are absolutly thrilled that we were able to pick up the APIM for less than $200.
So in closing, you can easily add nav to a non-nav edge. All you need to do is locate a used APIM with nav and swap it out. Please let me know if you have any questions.