Regarding the update log error issue, I found the following suggestion on another forum :
If you open the xml file in notepad on Windows, don’t change anything, just click file/save you will then find the site accepts the file.
It has some unprintable characters in the original, which if you open in a browser, you will see it complains the xml isn’t valid. After it’s saved (without changes) it is then valid xml
So I've tried this and I now no longer see the log file error when uploading to the Ford website...so I assume it has successfully uploaded it which is a move forward. My account is still showing the SYNC update is outstanding but I guess it might take the Ford servers a while to process the log file and update the details. So will be keeping an eye on it over the next few days 😎