That error instruction was printed on the reverse side of the paper and I obviously overlooked it.
That worked fine.
The upgrade to the latest version of domoticz did work out perfect.
Thanks

I did search but didn't find anything usable. I didn't find your link. I tried it. After the command "passwd pi" I was asked for the new password. I typed (twice) "raspberry" in order to get the default password again. Reply was "Authentication token manipulation error" and "password unchanged ...

I have v3.4834 running nice on my rpi. Installed it by putting the downloaded image on the sdcard. Now I want to upgrade to the latest version. I can't find any image that I can put on my sdcard. I only see that the upgrade can be done trough an command (sudo curl -L install.domoticz.com | bash ...