I have found a table on Cyanlabs with this prt number which implies it isn’t a MY20. But then when searching saw a post by @F150Chief on another thread saying not to update: Sync 3.4.22110 & 2021 Maps - Feedback & Issues - #89 by Joethedemon
Would be good to know for sure as I want to get this upgraded today if possible
Just to add, the car has been with the same Ford dealer since it was new and all servicing etc done there. I spoke to them this morning and they have no record of the unit being replaced, so would be the stock one.