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Shelly Pro3EM


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Hi everyone,

This morning I updated the firmware of the Pro3EM via the web UI. Since then, I've noticed that the update interval for the power total is around 5 seconds or more, which is significantly disrupting my automation. I'd like to downgrade to the previous version if possible, but I couldn't find any download link for the firmware.
Can anyone help me?


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  • 4 weeks later...


I have the same problem with firmware v1.3.1. I use the Pro3EM as an energy meter for a Victron inverter (via outbound websocket), and the update intervall is now too slow. In some cases this leads to an unstable control loop in the inverter. Meaning the inverter will oscillate between charging/discharging with max power.

How is it possible to flash back/ downgrade to v1.2.2, which worked fine for me?

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