"Does SYNC 3.4 for my 2017 Ford Escape include maps for West Africa? Can I change the region setting from North America to West Africa (Nigeria) during the update, and if so, how?"

[SaNdMaN]

We do not support changing regions, but you can always read the following thread for guidance → Tutorial: Installation of ROW (NNG) Maps on NA 32GB Sync 3 APIM