Hello,
I ask a newbie question.
I have a Home Assistant Connect ZBT-1 with ZHA.
I have a added a plug Nous A1Z.
All is OK.
When I look at firmware it tells me unknown.
In the meantime I have found a new firmware exist for this device. I would like to update it (some issue of comsuption).
Anyway to do it through ZBT-1 and ZHA?
thanks for your help
No one knows? 
I have ths same plug and also would like to know how to update it. I’m using ZHA, should I switch to MQTT?
I have conbee II, wondering the same! Where can the firmware be downloaded?
A little late to the party but perhaps this will help.
I find that generally z2m (zigbee2mqtt) works well for devices that have OTA availablility. I’d say that would be about 80% of my 100 Zigbee items. I do have Nous plugs and was able to seamlessly and easily update by using z2m. As you no doubt know you can’t use ZHA and z2m without a minimum of two cordinators specifically paired to one that handles ZHA and one for z2m.
Anyway, Nous A1Z does update with flawlessly with z2m.
You can add Z2M as an OTA provider for ZHA now 
