I have a Multiplus II 2x120. It’s plugged into shore power. It’s connected to two Victron 200ah lithium batteries. The Multiplus is flapping between inverting and bulk charging every 20 or so seconds. I do not see any alarms with the connected CerboGX I connected it to a laptop running Victron Connect and a MK3-USB. I tried to edit the settings, but it says it’s running a unsupported firmware and I am unable to make any changes. I clicked on Product Info to update the firmware. None of the listed firmware options are apparently compatible with my Multiplus.
Thoughts? I’d manually update from a local file, but have no clue where the firmware files are.