I don’t see a listing for that Sync 3 version. Are you sure this is Sync 3 or is this a Sync 1 variant with a 4 inch screen, being non-nav.
If this is a Sync 3 version, 1.1.xxxxx, you will likely need to split the installation because the APIM is running out of memory, or disk space. This is common with Sync Non-Nav versions. Even Ford accounts for this in their own autoinstall scripting for the later Sync 3.0 Non-Nav updates. The early versions of Sync 3, like yours, can be problematic to upgrade, but will upgrade nonetheless.
Yes, 2016. Lol. I got it to install, only issues now is it keeps popping up saying usb hub is not supported and to remove the usb. The usb isnt in there.