Homatics Box R 4K Plus

Hi! Im planning to buy a nokia 8010. Can someone point to me what files do i need to get CE working with DV? I cant understand if i need CE-NG or CE-NE or if the latest 21.1 version is ok for the dovi file.

And also if i can watch dv movies from a hdd where i got the movies or if i 100% need to get them through plex or something else.

And where do i get the CE-NG for my 8010?