May 2021..I learned that Ford had an update for my 2014 F150 sync my touch May 2021..went to owner.Ford website for the download typed my VIN into system and downloaded the update on a usb storage device, following fords direction I installed the update on my system, After update completed my navigation wouldn't work! I updated from version 3.8 to version 3.10. July 12 2021..Contacted customer service, told them the problem, spent 1 1/2 hours on the phone, the guy was really trying to help me, after his help failed to fix the problem, he told me I would have to go to dealership to have them diagnose the problem, and have to pay out of pocket for the diagnostics and fix! Desired resolution; Ford should fix this problem free of charge since the update was downloaded from their website and I followed Fords instructions to the letter!