Config.ini location?

[optio50]

What is the preferred location of this file?
it seems there have been two paths.
/data/etc/dbus-serialbattery/config.ini
/opt/victronenergy/dbus-serialbattery/config.ini

which is correct and will it survive a firmware upgrade?

[mr-manuel]

/data/etc/dbus-serialbattery/config.ini is the correct one.
/opt/victronenergy/dbus-serialbattery/config.ini gets overwritten by /data/etc/dbus-serialbattery/config.ini if you launch reinstall-local.sh.

Yes, /data/etc/dbus-serialbattery/config.ini survives firmware and driver upgrades.