Thanks, BBF, I had forgotten about the flash drive option.
Have you updated and is it worth it?
Hi MarkX. My 2018 MKZ is equipped with the latest version of SYNC 3.0, but is not eligible to be factory upgraded to SYNC 3.4, or that update.
Quick explanation and maybe TMI: Just as your SYNC 3.4 equipped vehicle cannot be factory upgraded to SYNC 4, my SYNC 3.0 equipped vehicle cannot be factory upgraded to SYNC 3.4.
Concerning whether the update is worth it: I'm not sure which version of SYNC 3.4 your vehicle will be updated to. The latest version (I believe SYNC v3.4.21194), has a glitch which eliminates the temperature reading in the "bubble" that pops up on the SYNC screen when we change the temperature.
Lincoln has told owners that glitch will be corrected in the next SYNC update, tentatively due out in January.
These updates are nothing earth shattering. Usually consisting of bug fixes and updates to handle the latest iOS and Droid software versions.
So whether to perform this update really depends on the individual. Some people simply feel they must have the newest software versions of everything, the moment it is released. Some people like to leave well enough alone for at least a little while.
My opinion: In reality, if you perform the update, you probably will not notice a change in anything, unless it fixes a glitch/bug you already have, or it causes a new glitch and something stops working, like the temperature reading. So if everything working correctly at the moment, leav it alone and ait until the next SYNC update. Then you can avoid the missing temperature pop-up display glitch.
I perform the SYNC updates to my car, but again, mine is SYNC 3.0 and updates are rare. 3-4 in almost 4 years now.
Let us know how you make out and good luck.