Problem flashing SONOFF Zigbee 3.0 USB Dongle Plus E firmware

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Sonoff dongle won't add

Hi first post. I have bought a Sonoff USB dongle. Have setup Zigbee2MQTT in Home Assistant. I can add Matter devices which is working. However the Sonoff dongle is detected but when I try to add it, it won’t be added. I guess I have to add it to control which channel and firmware updates right? How do I get it to work and which firmware should I update it with for most stability?