One way to go about it is using non-DCH drivers, but that's been getting harder and harder as time goes on. Another way, which I find preferable, is to get your hands on some OEM xml licenses (Dell is a good place to look) so you can have the UWP apps preinstalled 100% offline and working.
If you missed the lang pack thread, this MS doc has direct downloads for the FOD ISO's. Those are the OEM/partner images.