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Kevin avatar image
Kevin asked

Multiplus 2708 firmware upgrade with mk3 using flash

While attempting to upgrade the Multiplus firmware the step by step instructions say to unplug the cerbo gx and ve bus bms, and turn off the manual sw on the inverter. After connecting the mk3 into the cerbo gx port then turn rocker sw back on. At this point the inverter does not power up even though the 12v power supply is still connected. What am I missing ? How do I cycle the inverter and should it power up without the bms?

I feel kinda silly now. Thanks

firmware update
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Connect the MK3 directly to the MultiPlus not at the Cerbo.

What firmware is currently running on the MultiPlus?

If it is a version above 400 you can use the VictronConnect app for the update.

In VEfash at the step "switch on the device" it is normal that the device is not actually switching on just hit "next".

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Kevin avatar image
Kevin answered ·

Thank you for the quick response--it worked. Our multiplus now works with our smart batteries.

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