OpenThread ZBDongle-E re: fail @ - spinel_driver

Hi all,

Trying to convert my ZBDongle-E to openthread and have had a hell of a time.

Flashed with the sonoff webbased flasher to OpenThread 2.4.4

Connected to HA Green via the bottom USB port (w/ extension)

Installed add-on OpenThread Boarder Router 2.14.0

Config -

device: >-
/dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_74e66b868bc2ef1180b0c3138148b910-if00-port0
baudrate: “460800”
flow_control: true
otbr_log_level: notice
firewall: true
nat64: false

Boot fail log


Add-on: OpenThread Border Router

OpenThread Border Router add-on


Add-on version: 2.14.0

You are running the latest version of this add-on.

System: Home Assistant OS 16.2 (aarch64 / green)

Home Assistant Core: 2025.10.3

Home Assistant Supervisor: 2025.10.0


Please, share the above information when looking for help

or support in, e.g., GitHub, forums or the Discord chat.


s6-rc: info: service banner successfully started

s6-rc: info: service otbr-agent: starting

[20:58:08] INFO: Setup OTBR firewall…

[20:58:09] INFO: Starting otbr-agent…

[NOTE]-AGENT—: Running 0.3.0-b067e5ac-dirty

[NOTE]-AGENT—: Thread version: 1.3.0

[NOTE]-AGENT—: Thread interface: wpan0

[NOTE]-AGENT—: Radio URL: spinel+hdlc+uart:///dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_74e66b868bc2ef1180b0c3138148b910-if00-port0?uart-baudrate=460800&uart-flow-control

[NOTE]-AGENT—: Radio URL: trel://end0

[NOTE]-ILS-----: Infra link selected: end0

49d.21:58:41.431 [W] P-SpinelDrive-: Wait for response timeout

49d.21:58:43.433 [W] P-SpinelDrive-: Wait for response timeout

49d.21:58:45.436 [W] P-SpinelDrive-: Wait for response timeout

49d.21:58:45.436 [C] Platform------: Init() at spinel_driver.cpp:83: Failure

49d.21:58:47.438 [W] P-SpinelDrive-: Wait for response timeout

[20:58:47] WARNING: otbr-agent exited with code 1 (by signal 0).

I’ve tried reflashing the dongle, reinstalling openthread, changing pretty much every setting (not baudrate come to think of it)

I’ve tried to do a search on the topic but haven’t come to anything that I can make work for me.

Cheers.