With the driver from Driver 2015 did not work and from 2013 for DM800HDse (V2) I did not find. I have the Image OpenPLi 4.0 GST 1.7.0 Japhar (v6) back on it (which works) and the driver bcm7405.ko copied from the folder extra, then into the other image purely.
Unfortunately, without success. Have then copied the entire folder extra from the Image OpenPLi 4.0 GST 1.7.0 Japhar (v6) and replaced and now everything goes. Which driver it was I do not know.

Janoch