Just like any computer product, the Sync APIM’s have evolved over the years with better hardware to support more or different feature sets. The most recent major upgrade/change was the introduction of what is termed MY18.5 APIM’s. These differ from the Pre-MY18.5 units with updated hardware, including memory, processing power, etc. More recent changes include improvements to the processor environmental settings, etc.
Ford Service Departments will not (or are not authorized) update your Sync 3.0 (Pre-MY18.5) to Sync 3.2+ (MY18.5+). There is no mechanism available to them to do so.