Shelly 2PM GEN4 - Cannot add in Zigbee2MQTT

[ebeng]

What happened?

Switching over from "Zigbee Home Automation" to "Zigbee2MQTT"
Using a HamGeek Zigstar Universal Zigbee Gateway - PoE (Power over ethernet)

There is no way to add the Shelly 2PM-GEN4 in the Zigbee2MQTT => Permit Join => In the logging of the Shelly I do see a lot of " shelly_zigbee.cpp:187 Network steering was not successful (status: ESP_FAIL) "

The ESP / Zigbee chip in the gateway, has been upgraded to multiple version (from 2022 to all kind of version untill 2024/2025)
=> Running now ZIGBEE ( FW revision | 20250321 -- HW version | CC2652P2_launchpad )
=> ESP32 ( FW revision | 20240519 -- HW version | ESP32-D0WD )

Out of options for now... also created a ticket with Shelly to check this out....

What did you expect to happen?

No response

How to reproduce it (minimal and precise)

No response

Zigbee2MQTT version

2.6.3

Adapter firmware version

20250321

Adapter

HamGeej - Zigstar - PoE HMG-01

Setup

HA OS as a VM in ESX

Device database.db entry

No response

Debug log

No response

Notes

From Shelly:

shelly_zigbee.cpp:492 Start network steering
shelly_notification:164 Status change of zigbee: {"network_state":"steering"}
shelly_zigbee.cpp:187 Network steering was not successful (status: ESP_FAIL)

Frem Zigbee2MQTT:
[4-11-2025, 08:44:22] z2m: Zigbee: allowing new devices to join.
[4-11-2025, 08:44:22] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/response/permit_join', payload '{"data":{"time":254},"status":"ok","transaction":"bm756-1"}'
[4-11-2025, 08:51:57] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/health', payload '{"response_time":1762242717747,"os":{"load_average":[0.11,0.07,0.02],"memory_used_mb":1017.91,"memory_percent":51.6013},"process":{"uptime_sec":64206,"memory_used_mb":110.31,"memory_percent":5.5919},"mqtt":{"connected":true,"queued":0,"published":270,"received":310},"devices":{}}'
[4-11-2025, 09:01:57] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/health', payload '{"response_time":1762243317748,"os":{"load_average":[0.21,0.14,0.06],"memory_used_mb":1022.68,"memory_percent":51.8435},"process":{"uptime_sec":64806,"memory_used_mb":110.31,"memory_percent":5.5919},"mqtt":{"connected":true,"queued":0,"published":272,"received":310},"devices":{}}'
[4-11-2025, 09:11:57] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/health', payload '{"response_time":1762243917751,"os":{"load_average":[0.03,0.07,0.05],"memory_used_mb":1021.8,"memory_percent":51.7987},"process":{"uptime_sec":65406,"memory_used_mb":110.31,"memory_percent":5.5919},"mqtt":{"connected":true,"queued":0,"published":274,"received":310},"devices":{}}'

[Zarn-Smith]

I had a similar problem where I had joined a Shelly to a different Zigbee network and needed to reset the Shelly. Here is the command I used.

http://Shelly_IP_Address/rpc/Shelly.ZigbeeClear

[ebeng]

I had a similar problem where I had joined a Shelly to a different Zigbee network and needed to reset the Shelly. Here is the command I used.

http://Shelly_IP_Address/rpc/Shelly.ZigbeeClear

{} == > this was all the output it gave back.... thanks anyways :)

I did do also reset the shelly / factory reset / rebooted 100x ....

[ebeng]

[ebeng]

does no one use a shelly 2pm gen4 with a zigbee2mqtt?

[DManolis]

does no one use a shelly 2pm gen4 with a zigbee2mqtt?

i try to setup one, but i cannot - i try to do it from the Shelly app (iphone) , but cannot make it work... any ideas/guidance are welcome

[Mat-DB]

I only have experience with the Shelly 1 mini gen 4, no power monitoring.

First I also had troubles getting it to work until I came a cross this form post, there someone posted the URL where you can download the latest version of the firmware.

For the 1 mini gen 4: https://updates.shelly.cloud/update/Mini1G4

I just tried to modify the URL for the PM variant and that worked, so I assume that is the firmware for the PM variant.
https://updates.shelly.cloud/update/Mini1PMG4

NOTE: there are 2 versions, one for Matter and one for Zigbee!

By holding the button 5 seconds the hotspot comes on (if not already on) and there in the web interface I flashed the new firmware (uploaded the whole ZIP file).

After that I set zigbee2mqtt in join mode, put the device to power and it joined almost instantly.

This worked for me, you are of course responsible for what you do.
Hope this helps!

[chichi1967]

I'm using 3 since a few days ... and it was no problem to join my z2m network in home assistant ...

I think you enabled joining by either pressing the button 3 times (that's what I did) or by using the join feature in the zigbee settings in the webinterface.

Is bluetooth turned off? Zigbee and BT cannot work in parallel due to memory limitations according to FAQ - I'm not sure if it is always automatically disabled.

I'm using the SLZB-MR1 as coordinator and it is imho possible that it is not working with other coordinators.

But I have another issue ... some values are not automatically updated - as I need the correct power values it is currently hard to use those values directly as sometimes the power and/or current is stuck at some value >0W/mA although the switch is off, the only way to get is fixed is a manual reload in z2m.

[chichi1967]

i try to setup one, but i cannot - i try to do it from the Shelly app (iphone) , but cannot make it work... any ideas/guidance are welcome

Which flow did you use?

I used both BT and Wifi AP to get the 3 I have working:

After basic setup in the Ios app I used the web interface for the rest - I hope you can get this working at least.

(1. I configured them to use my IOT network - what of course is not needed)
2. Don't configure naything else than WiFI as all stuff will be lost ...
Switched to zigbee firmware - to do so you need to press the button 5 times, after this you should be able to see the 'Switch to Zigbee' in the settings menu (if it doesn't work it will show as use alternaitve Firmware)
3. Configure whatever is needed (names are not transfered to Z2M thus when you only use zigbee name changes are useless)
4. Enable joining on you Z2M network and either press the button 3 times or use the 'Join' feature in the Zigbee menu of the web interface.

[lexpostma]

I’m having a similar issue with 2 new Shelly 2PM Gen4’s. I updated to firmware 1.7.1, switched it the Zigbee firmware via the Shelly web UI, and permitted joining from Z2M. It show in the list as loading/unsupported for a short time, then disappears. This repeats while join permission is open.

In the Shelly UI it says “Connection status: steering”. Eventually it will say “failed”. At some point it said “joined” but it was nowhere to be found in Z2M.

I had this with one new Shelly, tried for hours and failed. Factory reset many times, software rebooted many times, hard power reboot, switched back to Matter firmware and to Zigbee again. Nothing helped. Grabbed another new Shelly and had the same issues. Moved closer to the coordinator with no effect.

This is what keeps being repeated in the logs:

[26-11-2025, 23:28:58] z2m: Device '0x48f6eefffed573a1' joined
[26-11-2025, 23:28:58] z2m: Starting interview of '0x48f6eefffed573a1'
[26-11-2025, 23:28:58] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/event', payload '{"data":{"friendly_name":"0x48f6eefffed573a1","ieee_address":"0x48f6eefffed573a1"},"type":"device_joined"}'
[26-11-2025, 23:28:58] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/event', payload '{"data":{"friendly_name":"0x48f6eefffed573a1","ieee_address":"0x48f6eefffed573a1","status":"started"},"type":"device_interview"}'
[26-11-2025, 23:28:58] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/0x48f6eefffed573a1', payload '{"last_seen":"2025-11-26T23:28:59+01:00","linkquality":null}'
[26-11-2025, 23:28:59] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/event', payload '{"data":{"friendly_name":"0x48f6eefffed573a1","ieee_address":"0x48f6eefffed573a1"},"type":"device_announce"}'
[26-11-2025, 23:29:11] z2m: Device '0x48f6eefffed573a1' left the network
[26-11-2025, 23:29:11] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/bridge/event', payload '{"data":{"friendly_name":"0x48f6eefffed573a1","ieee_address":"0x48f6eefffed573a1"},"type":"device_leave"}'
[26-11-2025, 23:29:23] z2m:mqtt: MQTT publish: topic 'zigbee2mqtt/0x48f6eefffed573a1', payload '{"last_seen":"2025-11-26T23:29:23+01:00","linkquality":null}'
[26-11-2025, 23:29:23] zh:controller: Interview for '0x48f6eefffed573a1’ started

I’ll be using the Shelly-HA integration over WiFi for now, until I find a solution. Would have loved to use these to improve my Zigbee network some more.

For reference:

• Home Assistant OS 2025.11.3 runs on RPi 5
• Zigbee2MQTT add-on version 2.6.3-1
• Coordinator is SMLight SLZB-06M connected over PoE
  • OS firmware version 3.1.3
  • Zigbee Coordinator firmware revision: 20250220

[chichi1967]

Not sure, but imho most times people suggest to use a coordinator with a TI chip inside instead of EFR32MG21, as the SLUB-06m is using the EFR32 this can be an issue.
Even when buying a sonoff dongle the P version was the better choice than the E Version.

I had/have no issues with z2m for both the soniff p and the slzb-mr1 as both haave the cc2652p from TI.

I think you followed the hints from the slzb webinterface for the configuration oc z2m addon in regards auf baudrate and adapter (for efr32 onthe mr1 these should be set to 460800 and ember).

[ebeng]

I did use a Zigstar Universal Zigbee Gateway PoE and yesterday I did receive a SLZB-MR4U PoE.

I did do a migration/swap of the old one for the new one. (nothing more than a few settings like IEEE address of the module)

On the new SLZB-MR4U I can see that it has even 2 Zigbee Radio channels.... EFR32MG26 (ember) + CC2674P10 (zstack) => Zigbee Coordinator both ... no other options enabled.

As the old one was also a "adapter: zstack" I did only configure the Z2M to connect with the CC2674P10 (zstack)

I did also upgrade all options within the SLZB-MR4U

1. EFR32MG26 => doing nothing for now...

• Firmware version: 20240602

2. CC2674P10 => this is in Z2M

• Firmware version: 20250325 (and now also 20240716 tried)

3. Core ESP32

• Firmware version: v3.1.4

[ebeng]

https://community.shelly.cloud/topic/12330-2pm-gen4-cannot-connect-with-zigbee2mqtt/#comment-47955

please do see the updates on the Thread here with Shelly... it doesnt work flawlessly yet.... but I managed to get it to work... while switching over from Zigbee to Matter to Matter to Zigbee the Shelly.... and also.... I had to move the Coordinator really close to the Shelly....