I have now followed the instructions (Update ZWave binding with new/updated device xml). Unfortunately I am currently stuck on updating the jar. Do I now have to download the java sdk or should this also be available with my OH installation on the pi? I am currently getting the error message “jar: command not found.” Unfortunately, I am neither a Linux professional nor do I have much experience with Java. 
What am I missing so that I can update the ZWave jar file? And what can I do to ensure that the old version of the smart meter is recompiled in the next release? Delete the two endpoints again?
This was addressed in the second post on that page.
One other option that some have tried is using a .zip utility. If you can get a copy of the original ZW jar and open it (not extract). Find the qubino folder, remove the old XML and add the one above and save. Then try to upgrade. I haven’t done this myself, but it was reported to work.
EDIT: As to the ZW DB it should be fine. I don’t believe the changes will have any effect.
@Home1907 Did you get the 5 and 6 EP channels working? If so I will need to fix the ZW DB to match, so it will be available to everyone.