# Why ZigBee devices seem offline in dev tools?

**URL:** <https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149>\
**Category:** Devices\
**Tags:** zigbee\
**Created:** [June 5, 2021, 9:44pm UTC](https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149 "2021-06-05T21:44:24Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Fac3](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fac3/32/4550_2.png) [@Fac3](https://community.homey.app/u/Fac3)\
**Post date:** [June 5, 2021, 9:44pm UTC](https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149/1 "2021-06-05T21:44:25Z")

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Hi All,

I’ve just found a quite interesting issue.

If I try to change channel to 15 from 11, a red notification shows up, telling me that some of my devices are offline, then Homey does nothing, channel does not change.

Weird part comes here, in dev mode I can see “x” in “online” column for couple items, but all affected devices can be interviewed, also switchable with almost no delay from user interface.

So what’s going on here?

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**Author:** ![Peter\_Kawa](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/peter_kawa/32/173848_2.png) [@Peter\_Kawa](https://community.homey.app/u/Peter_Kawa)\
**Post date:** [June 6, 2021, 12:31am UTC](https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149/2 "2021-06-06T00:31:26Z")

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> [@Zigbee routes gone after upgrade to v5 rc38](https://community.homey.app/t/zigbee-routes-gone-after-upgrade-to-v5-rc38/37428):
>
> Hi, Ever since upgraded to v5 all the routs on the developer Zigbee page is gone, se picture. Anyone have a idea why that can be and how I can get them back? Regards Stefan

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**Author:** ![DirkG](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/dirkg/32/118897_2.png) [@DirkG](https://community.homey.app/u/DirkG)\
**Post date:** [June 6, 2021, 5:45am UTC](https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149/3 "2021-06-06T05:45:25Z")

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I know, it’s not really helpful at this moment, but this is an answer from Athom to the question if it is possible to change the Zigbee channel without having trouble or can it cause problems.

 ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/9/f/9f6add3965a9fd9de3dbff823c19eaf7abd3c609.jpeg)

Maybe this thread from @Dijker is helpful:

> [@Fixing disconnected Zigbee devices (without having to modify all flows)](https://community.homey.app/t/fixing-disconnected-zigbee-devices-without-having-to-modify-all-flows/37896):
>
> With the release of Homey firmware 5.0.0 some improvements have been made to the Zigbee stack. I experienced some devices that stopped communicating with Homey in previous firmware rc’s. For me most where battery powered Aqara & Xiaomi ZigBee sensors As I didn’t want to have to fix flows I have do the following: Remove the battery for a couple of seconds And/Or start pairing the same device without removing it, just in place where it was mounted. (Not near Homey) you get a [dupicate de…

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**Author:** ![Fac3](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/fac3/32/4550_2.png) [@Fac3](https://community.homey.app/u/Fac3)\
**Post date:** [June 6, 2021, 7:42pm UTC](https://community.homey.app/t/why-zigbee-devices-seem-offline-in-dev-tools/48149/4 "2021-06-06T19:42:26Z")

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Thanks!

I know, there are down sides if I try to change channel… anyway, I have to gather experience with this. I’m the Hungarian distributor of Homey. In case of request, I need to explain how it works. But seemingly I can change the channel only at the initial setup.