Multitask

Things you need to do, regardless delete the phone entry on the car and on the phone. as if you were starting fresh. Also, a master reset will just delete settings, I understand it might also delete some things you don't want it to. But if it is important to get the phone working, then you need to do that. If all that does not work, maybe a trip to the dealer is needed.... Also make sure you are up to date on the updates for each, car and phone(s)

I would do the 3.4 update first, then the maps... just in case the maps want something from the newer version of 3.4 Otherwise it should not matter.

I did the update for 3.4, and then updated the maps.... so yes

Neither, it is done through the APIM I think, and it would depend oh what one you go.... so not software to update (that I'm aware of ) and no camera to update

In a short answer, the APIM is what controls just about everything. so yes it would be good to leave it in there. https://en.wikipedia.org/wiki/Ford_Sync#System_hardware

Might want to explain your post.... if there is a question...etc... have you taken your vehicle to the dealer for them to 'look' at it?

If I remember correctly. If there is an update for it, it was done through a CD that was inserted. I would not do the update. you gain nothing.

Glad it all worked out.... sometimes they don't do much of anything but wash it. While that was not a bad idea, if all you wanted to do it purge the entries, you could have just deleted them. 😎

Typically when they do, it's about 2 times a year.... either Ford of Lincoln.... or so I've noticed.... and updates only happen to vehicles that need them, so not all vehicles get them...

depends on what vehicle this is for.... owner.ford.com or owner.lincoln.com will tell you if you can use / take a newer version.... 3.0 or 3.4 and the sub versions.... Sync 4 comes with the newer vehicles... but not all of them...

Never does, that is separate

As far as the version, you should be able to navigate to the 'about' area, and see if you see 'about sync' to get a version # I seem to remember that 4.4 is about the latest you want to do or get, like Alcoa said 4.6 put in settings that they did not want. and were at the time able to roll back.

Just because Ford shows ver 4 is available, does not mean your vehicle can use/take it. Have you tried a factory reset? all that does is remove all the setting back to factory, NOT take you back to the factory version.

Tell your phone to not auto connect.

I do not think it was either. Only way to know is after doing both, then plugging it in, if it is there, great. But if not then it was not meant to be. Plus a dealer would know too... if they chose to tell you. Of they say yes, couple be you need the newer USB module for it.... can get one from a later car... car-part.com to see what might work.