New firmware for Victron MPPT: v3.18 and v1.74 improves operational reliability

More stable charging, better communication and smarter features for SmartSolar and BlueSolar.

Victron continues to improve its SmartSolar and BlueSolar controllers, and the latest firmware update delivers exactly what many boat owners and off-grid users are asking for: higher reliability, better communication and smarter features.

In this article, we go through what's new in firmware v3.18 and v1.74, what it means for you – and how to easily update your controller.

What's new in firmware v3.18?

This version applies to models using the v3.xx series of firmware.

Improvements in v3.18

• Several internal improvements that increase overall reliability.

• A fix for communication issues with VE.Bus BMS v2 and VE.Bus BMS NG. Previously the controller could miss entering “safe mode” if the BMS was disconnected. This has now been fixed and provides a safer system response.

In summary, v3.18 makes the system more stable and secure, especially in installations where BMS communication is crucial.

What's new in firmware v1.74?

This version applies to models running the v1.xx series of firmware.

Improvements in v1.74

• Several internal improvements for increased reliability.

• Support for setting lock on models with pluggable display.

• Improved reliability when starting load output.

• The history menu has been removed from the pluggable display to simplify the user interface.

Version 1.74 makes the controllers more robust and provides better control in systems where multiple users manage the equipment.

Full change log

For those who want to read all the details, the full changelog is available in Victron's firmware library on Victron Professional. There you will find both the v1.xx series and the v3.xx series.

How do I update?

Which firmware to use depends on the model, not the installation type. It is not possible to install the wrong firmware – the controller simply will not accept a version that is not intended for it.

1. For systems connected to VRM Portal

The recommended method is to use VRM Remote Firmware Update. VRM will automatically select the correct firmware and guide you through the process.

2. For systems without VRM connection

You have two options:

A. Wait for the update to appear in VictronConnect. It usually takes a few weeks for it to be rolled out.

B. Download firmware manually

• Visit the firmware library at Victron Professional.

• Download the correct file.

• Use VictronConnect's “self-supplied file update” feature.

For more information, see the firmware updates section of the SmartSolar manual.

Conclusion: A small update that makes a big difference

Although v3.18 and v1.74 do not introduce new features, they are important for anyone who wants:

• more stable operation

• better communication

• fewer sources of error

• safer system response

For boat owners, installers and off-grid users, this is an update that is simply worth making.