It can be difficult to tell when your SYNC update is complete, as the process can take a while and there is no specific indication that it is finished. However, there are a few things you can look for to check if your update is done.
Firstly, you can check the version number of your SYNC software. To do this, go to the settings menu and select 'About SYNC'. The version number will be displayed here - if it matches the latest version number then your update is complete.
Secondly, you can check for any new features or changes that have been made available in the latest update. If you're not sure what has changed, you can always consult the release notes which should be available on Ford's website.
Finally, if you're still unsure whether your update is complete, you can always contact Ford customer service for assistance.