I realize that you have an OBDLink MX+, Bluetooth Adapter. This is not recommended for FIRMWARE updates, as the bluetooth will time out. Make sure that you set all of your power saving settings on your computer to OFF, as this will help. Bluetooth will have issues with maintaining the connection and speed. If you can return it and get the EX version, this would work much better. (I did the same thing.)
This will help. I should have attached it to the last post…
APIM Firmware Flash Rescue Gen 2 (H-2017).txt (1.2 KB)
A good place to look for info on the other issue is here:
2015 - 2020 Ford F150 - Ford F150 Forum - Community of Ford Truck Fans
EDIT:
I replied to your post above with the thought that the APIM was the issue, not the FCIM. The FCIM should be recoverable thru FORScan using the original calibration files. Once you program those, you will need to load your entire asbuilt for the FCIM and reset the FCIM thru FORScan.