Hello everyone - Having an issue with all my Zigbee Devices not responding anymore.
Hub Version: 2.3.5.152
Hub: Rev C-8.
Connection: wired.
I was running 2.3.5.152 for about 3 months without any issues, but decided to update the version. I went to 2.3.6.136 and that seemed fine. I noticed my Zigbee devices started to slow down a bit the other day. For example, my contact sensor would take 5-10 seconds to show the door was open. I rebooted the hub and everything seemed fine again.
Last night, I updated to 2.3.6.139 and that's when I noticed all my Zigbee devices stopped responding. I tried:
Shutting the hub down, waiting a couple minutes, and powering it back on.
Downgrading the firmware back to 2.3.5.152 and restoring a backup I took prior to the upgrades
Tried pairing a new Zigbee Device. The device was not detected.
Tried resetting and pairing an existing device. The device was not detected.
Tried updating to 2.3.6.140 that was just released, no luck.
I am not getting any messages regarding 'Zigbee Network is Offline' like I saw in other posts.
I did make some changes to my Mesh network yesterday and didn't realize that would have an effect on Zigbee. I have 3 Eero 6e devices and was seeing an issue where they were choosing to connect to each other via Wifi vs the wired connection I have for them. Support had me swap two of the devices yesterday which I did (and strangely fixed the issue I was seeing there).
So basically the eero that I had in the living room is now in the basement and the eero I had in the basement is now in the Living room.
Unless the changes affected the channels Eero is using for Wi-Fi, or suddenly increased interference for some reason, I would not expec that swapping the location of a couple Eero devices should not blow your entire mesh up. Especially if swapping them ensured they were connecting via Ethernet.
Do you know what channels your 2.4GHz Wi-Fi is using? If not can you check settings or do a scan to determine that? One thing you want to avoid is causing interference between Wi-Fi and Zigbee, which both use 2.4GHz.
Taggin @support_team as maybe they can check engineering logs if they are available, to see if anything looks odd there. Proactively, send your Hub's UID (Settings>Hub Details) in a PM to @support_team.
Following up on this. I ended up changing the Zigbee Channel to 25 and noticed I was able to pair a new Zigbee device. I then went and re-paired a handful of devices before calling it a night.
The following day, the remaining Zigbee devices had connected and I have been good to go.
