It is not required to keep your Victron equipment updated to the latest firmware version. Stable systems should be left with their current firmware. Here is when to perform a firmware update:
During commissioning / first install;
When trouble shooting;
To add a new feature that is required by the installation.
Firmware updates are only available in Settings Mode, requiring a password - zzz
Warning
All settings will be reset to factory defaults after the firmware update process.
Once you are connected to the unit, enter the settings, select the Product Info from the top right dots.
VictronConnect comes with the most up to date versions of the firmware already, so an internet connection is not required.
Click update and then do not touch either device until the firmware update is complete.
There is a video of the proceedure here:
Step by Step:
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If the firmware update fails, please attempt it again. If you still cannot recover the unit, Please use the alternative method and follow these steps using the VEFlash software instead.
It is possible to use VictronConnect to efficiently update the firmware for 3 phase, or parallel units.
To do this, the units must already be programmed for their multiple unit configuration and connected to each other.
Units will be returned to factory default settings once the firmware update is complete. So make sure that settings and parameters are saved, and you will also need to reprogram them for their multiple unit configuration (as is covered in the 3 phase and parallel documentation).