A year ago, I noticed that the solar controllers no longer functioned correctly after updating to the latest firmware. Now, since I added a battery to my system, I also updated the firmware for the solar controllers to V3.16. Then only one of the 7 SmartSolar controllers connected via Can was stil…

Hi @Alex Pescaru, I’ve actually found a way to get a newer version of the solar controller working for me. You gave me the idea, as you’d discovered that a BMS packet on the CAN bus might be the cause. So I selected a CAN profile without BMS, and now version 3.18 is running without any issues. [B…

Here’s what it looks like in version 3.13: [image] I’ll give the latest version a go this evening.

My GX is running version 3.51: [image]

I would suggest if you would like to try this again. Update the GX (download a copy of the old version first for rollback) and then try the firmware. Also download the old charger firmware so you can rollback there as well. All available on the professional.victronenergy.com site.

Which combination of GX firmware and SolarCharger firmware should I try?

The current GX is 3.72. There is only one firmware version above yours for the chargers - 3.18. But update the GX first. Verify all is well, Then do one charger.

There was a change on new versions where it may not recognise a much older backup version. Not sure where the cutoff is.

[image] ThomasManthey: Here’s what it looks like in version 3.13: Now enter on each of these devices and look at the Network address. Is it different and unique for each of them? [image] ThomasManthey: OK, tonight I’m going to try out the combination of GX V3.72 Beware that you’ll no…

By the way… Do you have any VE.Smart Network enabled in the MPPTs settings?

Whilst preparing the system update, the following occurred to me: I use a driver for a ‘virtual battery’ GitHub - mr-manuel/venus-os_dbus-mqtt-battery: This Venus OS driver gets the data from MQTT and displays it as battery. · GitHub to aggregate my three batteries connected via SmartChunt. I have…

There is still a problem with the MPPT Can SmartSolar firmware 3.18

DIY

ThomasManthey 5 April 2026 16:16 20

OK, tonight I’m going to try out the combination of GX V3.72 and SmartSolar V3.18.
Fortunately, the GX is very reliable when it comes to software updates. It always saves the last working version. That way, if it doesn’t work, I can easily revert back.

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There is still a problem with the MPPT Can SmartSolar firmware 3.18

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