So, having a live chat with Ford Assistance, and the operator, Deb, tells me that the feature that we all are trying to get working again was actually a BUG, which they corrected in the 4.6 update! Here is the chat log:
Please wait for a SYNC Agent to respond.
Deb says: Hello Rocky. My name is Deb. How can I help you? Rocky says: Hi Deb. Not sure if you all are aware, but the SYNC 4.6 update breaks the Siri voice functionality in my Fusion with MyFord. Is there a way to downgrade to the earlier version? Deb says: I will be glad to look into this for you. Please stand by while I check the information. Deb says: Thanks for your patience! There is no way to go back to an earlier version. Siri was not a feature, it was a bug in some previous versions, and the software has been patched, so that bug can no longer be exploited. Rocky says: So, me being able to talk to Siri through my SYNC system was a bug?? Deb says: For this system, unfortunately yes, the update to 4.6 corrected that bug. It was not originally meant to be a part of this system. My apologies for the inconvenience. Rocky says: Okay...so is there a way, other than disabling Bluetooth, for me to talk to Siri? Because when I'm connected, my iPhone is still listening for voice input via Bluetooth. Deb says: There is not a way to disable Bluetooth. Rocky says: I meant to turn off Bluetooth on my iPhone, not disable Bluetooth altogether. I have to turn off Bluetooth in order to talk to Siri, which kind of defeats the purpose of Bluetooth. Deb says: If your turn off Bluetooth you will not be able to use the SYNC system. Rocky says: ...and now we're going in circles. Okay. Well, thanks anyway. Deb says: You're welcome! Do you have any other questions or concerns for me today? Rocky says: No. Deb says: Thank you for contacting Ford Motor Company. Please take a short survey to rate my service. Click on the small "X" in the top right hand corner to launch the survey. Have a great day Rocky!