The firmware must be 506 or later. Here is link for info:
www.victronenergy.com
This will only prioritize the battery charging. Victron also referenced the following as a way to utilize this to reduce energy usage if you are connected to shore power.
https://panbo.com/maximizing-solar-production-with-victron-gx/
We happened to be staying at a place for a couple of months coming up to help our kids out. They will be charging for electricity. So I was planning on implementing this to reduce electricity costs. Just curious if anyone has done this yet and did they encounter any issues. I do understand that this will blow out your current setting and you will need to reprogram the unit............
I would also note that the Connect app for Android allows you to do the update from your phone now.