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[QUESTION] Update firmware of a EFR32MG21 in a AVATTO GW40-MQTT Zigbee-Gateway #112

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[QUESTION] Update firmware of a EFR32MG21 in a AVATTO GW40-MQTT Zigbee-Gateway#112
@RichardBeisser

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@RichardBeisser
RichardBeisser
opened on Sep 28, 2025

Hello,

I bought this Zigbee-Gateway:
https://www.aliexpress.com/item/1005009682744839.html

The device has a ESP8266 wifi-module and a EFR32MG21 zigbee-modul.
Because it is not an USB-Donge-Gateway, you have to update the EFR32MG21 by another way.

How can I update the EFR32MG21 with universal-silabs-flasher in such a gateway?

Thanks.

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