Home Assistant Connect ZBT-2 Fails to Initialise after update

It was all going so well, I purchased the ZBT-2, installed it with not problem, installed Sonoff Zigbee devices, set up some automations, but then there was an update for the ZBT-2, and now it will not initialise.

What do I need to do?

Yes, I’ve got the same - update to 7.4.4.6 failed. Now I can’t seem to initialise or update firmware, seems bricked.

Error in the log is:

Logger: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/commands.py:323
integration: Home Assistant WebSocket API (documentation, issues)
First occurred: 22:58:51 (2 occurrences)
Last logged: 23:03:11

[139775313683104] Error during service call to update.install: Failed to flash firmware

1 Like

@AlanCragg @GodOfGerbils Had the exact same issue today with firmware 7.4.4.6 - ZBT-2 got stuck in bootloader mode, ZHA wouldn’t load, entire Zigbee network down.

HA can’t recover from this on its own. Here’s what worked for me:

  1. Unplug ZBT-2 from HA and connect it to a PC,
  2. Go to: Home Assistant Connect ZBT-2 – Device Toolbox (needs Chrome or Edge)
  3. Connect to the device and use “Install firmware”,
  4. I went back to 7.4.4.5 - network came back immediately.

Skip the 7.4.4.6 update for now. The LED fix in changelog seems to be causing this.

5 Likes

Thanks, I had gone back to my old Zigbee Adaptor. The re-flashing seems to have worked.

What a disappointing product launch. First, the initial firmware wouldn’t update, and now it ends up bricking the entire Zigbee network. Unbelievable.

Hello,

A Github issue is open here : [BUG] ZBT-2 Update to 7.4.4.6 fails · Issue #149 · NabuCasa/silabs-firmware-builder · GitHub

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That worked, much appreciated! I am now bookmarking the “Home Assistant Connect ZBT-2” page for future reference.

Now all I have to do is reconnect my Sonoff door contact and switch and I should be back to business as usual.

I am sorry I’m a bit new to all of that, can you please tell me where can I get 7.4.4.5 for ZBT-2?