Anyone manged to make a Aeotec gen 5 Backup?

I'm not saying that it's not possible, but I don't see why Aeotec (et al) would waste time/space backing up a sensor value. If it were me, I'd just be concerned with backing up node information, parameter values, neighbor lists, etc. That said, the Z-Wave specification contains information on transient things like the "last successful route" which I suppose could change during the backup cycle. I can see the benefit of taking multiple snapshots of the hardware to compare against one another--and they could easily ignore certain immaterial differences in the comparison.

I'd be curious to learn what the difference is.

Yes, but this would need a proper stucture for the data.
What they are doing ( just a memory dump) is a no brainer.

I have tested the backup somewhere else, where none of the devices could reach the stick.
The software now made 512 kb backups from the same stick, but they were identical.

So the stick writes data to the flash during a normal backup.

I think I will make backups off site in the future.

Thanks all you guys for your help.
Cheers
Wilhelm