Hi, it is Sonoff Zigbee 3.0 USB Dongle Plus V2.
And I’m getting : Unknown error occurred
When Integration starts it reports the dongle.
/dev/ttyUSB0 - Sonoff Zigbee 3.0 USB Dongle Plus V2, s/n: xxxxxxx - Itead
I don’t see anything in logs.
It was working some time ago when I test it.
Today some Zigbee bulbs arrived and it failed.
So I removed the integration and getting this error now.
Looks like other members of the forum have this issue too.
Updated FW to latest, the same error…
ZHA or Z2M?
If you have another Dongle running something else, the tty address could be getting confused.
The TTY ports can sometimes change internally, so it is suggested to use the /serial/by-id/ URL that always talks to your dongle by serial so it is always right.
You can find out what that is by using:
and looking for it under all hardware, something like this:
Once you have the long URL use that instead of the ttyxxx one.
If you are using a Container installation, this is how to see the /serial/by-id/ URL:
ls -l /dev/serial/by-id
I’m new to this. At the moment trying to complete integration to add 3d reality bulbs.
Here is what I got after selecting Manual, entered Zigbee type:
EZSP = Silicon Labs EmberZNet protocol: Elelabs, HUSBZB-1, Telegesis
and this for Dev path : > /dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_468099f4a23aef11a5bd321455516304-if00-port0
under Hardware:
>
> ttyUSB0
> Subsystem: tty
> Device path:
> /dev/ttyUSB0
> ID:
> /dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_468099f4a23aef11a5bd321455516304-if00-port0
> Attributes:
>
> DEVLINKS: >-
> /dev/serial/by-id/usb-Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_468099f4a23aef11a5bd321455516304-if00-port0
> /dev/serial/by-path/pci-0000:00:14.0-usb-0:3:1.0-port0
> /dev/serial/by-path/pci-0000:00:14.0-usbv2-0:3:1.0-port0
> DEVNAME: /dev/ttyUSB0
> DEVPATH: /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/ttyUSB0/tty/ttyUSB0
> ID_BUS: usb
> ID_MODEL: Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2
> ID_MODEL_ENC: Sonoff\x20Zigbee\x203.0\x20USB\x20Dongle\x20Plus\x20V2
> ID_MODEL_ID: ea60
> ID_PATH: pci-0000:00:14.0-usb-0:3:1.0
> ID_PATH_TAG: pci-0000_00_14_0-usb-0_3_1_0
> ID_PATH_WITH_USB_REVISION: pci-0000:00:14.0-usbv2-0:3:1.0
> ID_REVISION: '0100'
> ID_SERIAL: Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_468099f4a23aef11a5bd321455516304
> ID_SERIAL_SHORT: 468099f4a23aef11a5bd321455516304
> ID_TYPE: generic
> ID_USB_DRIVER: cp210x
> ID_USB_INTERFACES: ':ff0000:'
> ID_USB_INTERFACE_NUM: '00'
> ID_USB_MODEL: Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2
> ID_USB_MODEL_ENC: Sonoff\x20Zigbee\x203.0\x20USB\x20Dongle\x20Plus\x20V2
> ID_USB_MODEL_ID: ea60
> ID_USB_REVISION: '0100'
> ID_USB_SERIAL: Itead_Sonoff_Zigbee_3.0_USB_Dongle_Plus_V2_468099f4a23aef11a5bd321455516304
> ID_USB_SERIAL_SHORT: 468099f4a23aef11a5bd321455516304
> ID_USB_TYPE: generic
> ID_USB_VENDOR: Itead
> ID_USB_VENDOR_ENC: Itead
> ID_USB_VENDOR_ID: 10c4
> ID_VENDOR: Itead
> ID_VENDOR_ENC: Itead
> ID_VENDOR_ID: 10c4
> MAJOR: '188'
> MINOR: '0'
> SUBSYSTEM: tty
> TAGS: ':systemd:'
> USEC_INITIALIZED: '53565759669'
just to mention. I installed Silicon Labs Flasher add-on.
This under configuration:
The message here is confusing :
[21:08:51] INFO: The selected serial port is not a USB device.
Add-on: Silicon Labs Flasher
Silicon Labs firmware flasher add-on
Add-on version: 0.4.0
You are running the latest version of this add-on.
System: Home Assistant OS 16.3 (amd64 / generic-x86-64)
Home Assistant Core: 2025.12.3
Home Assistant Supervisor: 2025.12.3
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 universal-silabs-flasher: starting
[21:08:51] INFO: The selected serial port is not a USB device.
[21:08:51] WARNING: No firmware found for the selected device, assuming firmware is installed.
[21:08:51] INFO: universal-silabs-flasher-up script exited with code 0
s6-rc: info: service universal-silabs-flasher successfully started
s6-rc: info: service legacy-services: starting
In case you weren’t aware, the Flasher addon and ZHA can’t both be running at the same time or it will lead to conflicts because both are trying to claim your device.
Stop the addon or disable ZHA if you want the other program to connect to your device.
Yes. Thank you. I was reading about this. It is not running.
This is the FW on the dongle: Zigbee (EZSP) 7.4.4.0 build 0 (Sonoff ZBDongle-E)
Flashed using : Silabs Firmware Flasher | Web based flasher for ZB-GW04 and ZBDongle-E. MultiPAN RCP firmware enables these devices to be used with Silabs Multiprotocol Addon in Home Assistant. Allow Zigbee and Thread to co-exist on the same dongle. Get ahead of the tech an experiment with Matter!
All is well after updating to the latest HassOs and HA Core yesterday,
