UPDATE:
I have updated to version 2.2 successfully.
I am on a Mac. Here is what I did:
I disabled auto-unzip in Safari preferences, and I re-downloaded the .zip package from the Ford site so that I ended up with an unzipped .zip file.
Once i had the .zip downloaded, I used The Unarchiver (free app from the app store) to unzip the package file properly. It will leave you with a ".lst" file, a ".MSA" file and a "SyncMyRide" folder.
Now for the USB Drive: I used a 32GB SanDisk thumb drive that supports both USB 2 and 3. The flash drive was formatted to exFat per Ford's instructions.
Copy each of those things INDIVIDUALLY, meaning one at a time, to your flash drive; both files one at a time, and then the folder.
I went out to my car, started it up and plugged the drive in. Instantly at the top of the screen it said "Software Updating". It took about 22 minutes to finish and bring up a window stating that the installation was complete and that I could remove the USB drive and turn off the car.
I waited about 8 minutes and restarted the car, but the software still said version 1.0.
Then I waited about an hour and fifteen minutes and restarted the car and the software now said version 2.2 and showed a notification "Software Updated" in the top bar.
Car Play now works!!!
Hopefully this will help all you other Mac-based FiST owners get your software updated