For whom is interested, I want to share what I've found to backup and restore a Z-wave config on a AEON Labs ZW090 Z-Stick Gen5 (EU) after accidentally resetting the whole configuration i.s.o. just a soft reset.
In that case you really want to have a backup; that will save you a lot of time rebuilding the network and adjusting your Domoticz configuration when devices won't return with their original ID (that's what you want when you don't want to lose your consistent statistics and history).
I found a tool called Z-Stick Gen5 Backup Tool (zwave_500.exe), that will be able to read and write the Zstick's EPROM to and from a hex file.
This tool will run on a Windows system, so you will need to remove your stick from your Domoticz system (Pi or NAS) and connect it to a USB port on a PC or laptop.
After downloading the tool from this site on the Internet , you need to unpack the zip file to a folder of your choice, open an explorer window and find and execute the EXE file; no need to install.
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First open the settings menu to select the com port assigned to the Zstick and next click the Read Eeprom button to store your backup. You need to do this each time you make any change to your Z-wave configuration, like adding or removing a device.
When you need to restore this configuration, follow the same procedure as with the backup, except you click the Write Eeprom buton of course.
