So I just tried the 2.3 official update from the ford site for my '16 non-nav car. It hits Mem_err03 every time. My understanding though is that the 3.0 update seems to install without issue, BUT that its filled with lots of bugs for the non-nav cars. So I'm thinking the best course of action is just to wait until a better 3.0 release becomes available.
However, I was running a build of the 2.2 release that was still in development. I had originally installed the 2.2 upgrade well before the official release came out. Since I was already down in the car with my laptop, I decided to try moving to the full 2.2 official release. That worked perfectly moving between 2.2 builds. So for anyone running the pre-release 2.2 build you should at least move to the official release. I have no clue what's different between the build versions, but I'm sure there is something.