Sorry if this has been asked before but haven’t found it.
There are two copies of Volumio running on my home network, mine and my son-in-laws. Both show in my browser and can be selected.
Occasionally my son-in law doesn’t check properly when he clicks update and it updates my copy.
This cocks up my HiFi preamp which has a UART connection to my PI running Volumio. I then have to take it apart and re-install its firmware.
Is there a simple way to password protect the System menu or even just the Update button?