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After finding this article with detailed instructions on how to upgrade my old and boring 2017 Focus ST Sync software to the latest and greatest, I decided to forge ahead despite the inherent risk of upgrading on April 1st. The process went off without a hitch and I now have the 2020 Sync 3.4 system with the latest navigation maps. As a bonus, I also have a redundant climate screen in case my physical climate controls melt away. This upgrade compliments my global window and double honk modifications nicely, in that no physical changes were required. My obnoxious bypass valve remains the only physical modification after my life lessons from changing everything possible on my late 1999 Mercury Cougar.