Hello, I'm new, but I just bought a used '15 MKZ and was trying to update my SYNC to use with siri but the Lincoln site is telling me 3.7 is the latest update even though clearly there was a 3.8 after, Wondering if anyone still has that 3.8 file available? Thanks!
I upgraded my 2015 MKZ from Sync 3.7 to 3.8 back in January. The only caveat I can see is that your 2015 car must have the MyLincolnTouch system of Sync in order to upgrade, but I think all 2015 cars had that. The dealer should be able to install the upgrade for you, btw.