# How to check zigbee firmware version? **URL:** \ **Category:** Questions & Help\ **Tags:** zigbee, homey-pro\ **Created:** [July 7, 2022, 2:53pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671 "2022-07-07T14:53:42Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![VanGilles](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/vangilles/32/11478_2.png) [@VanGilles](https://community.homey.app/u/VanGilles)\ **Post date:** [July 7, 2022, 2:53pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/1 "2022-07-07T14:53:42Z")
Hello, I’m on my 2016 Homey Pro on FW 8.0.1. I have some issues with high CPU load and a sluggish system after time. I read that this can be due the zigbee firmware which has been recently updated by FW 5.0. But to update the zigbee FW I read that you must manually reset the zigbee network and re-install all devices. Before I go into all this hassle, I want to make sure I am on a old version and not allready on the newest version. How can I check my current zigbee version and the latest from Homey? Thanks. ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [July 7, 2022, 2:55pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/2 "2022-07-07T14:55:22Z")
> [@VanGilles](#): > > How can I check my current zigbee version and the latest from Homey? Homey doesn’t have a separate Zigbee firmware, it’s part of the main firmware. So your Zigbee version is 8.0.1, so to speak. ---
**Author:** ![VanGilles](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/vangilles/32/11478_2.png) [@VanGilles](https://community.homey.app/u/VanGilles)\ **Post date:** [July 7, 2022, 2:58pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/3 "2022-07-07T14:58:34Z")
Thanks robertklep, but what’s about the story that you manually must reset the zigbee network to get the newer firmware, zigbee rewrite, to be active? ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [July 7, 2022, 3:05pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/4 "2022-07-07T15:05:35Z")
All I remember (it’s been a while) is that a reset fixes a security issue with Homey’s Zigbee network if it was created pre-v5. Where did you read it will update Zigbee firmware? ---
**Author:** ![VanGilles](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/vangilles/32/11478_2.png) [@VanGilles](https://community.homey.app/u/VanGilles)\ **Post date:** [July 7, 2022, 3:12pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/5 "2022-07-07T15:12:38Z")
> [@robertklep](#): > > Where did you read it will update Zigbee firmware? On different posts, also in this one first post: > [@Aqara Motion Sensor - not using zigbee routers?](https://community.homey.app/t/aqara-motion-sensor-not-using-zigbee-routers/59613/4): > > You don’t have to, but several users here reported a “worth the pain and effort”. Zigbee was rewritten in fw v5.0.0, but only gets activated by a zigbee reset. Yes, all zigbee devices get lost, you’ll have to pair all zigbee devices again and repair all related flows. Hint: if you install [Flow Checker](https://community.homey.app/t/app-pro-flow-checker/50986) prior to the reset, you’ll get informed about all the flows that “break” after the reset. If you use Flow Checker app here ([Homey Developer Tools](https://tools.developer.homey.app/tools/app-settings)) on a laptop, **Zigbee was rewritten in fw v5.0.0, but only gets activated by a zigbee reset.** ---
**Author:** ![Dijker](https://avatars.discourse-cdn.com/v4/letter/d/b9bd4f/32.png) [@Dijker](https://community.homey.app/u/Dijker)\ **Post date:** [July 7, 2022, 3:14pm UTC](https://community.homey.app/t/how-to-check-zigbee-firmware-version/65671/6 "2022-07-07T15:14:35Z")
To see if you reset Zigbee before or after FV v5.0 Check the Well-Known-Key > [@Cve-2020-28952](https://community.homey.app/t/cve-2020-28952/45343/1): > > Q: I have updated my Homey from a version before v5.0.0, do I have the old Well-Known-Key? > A: Probably yes, you can Check it [here](https://developer.athom.com/tools/zigbee) if the Network Key is: “01:03:05:07:09:0b:0d:0f:00:02:04:06:08:0a:0c:0d” Although not to be determined independently some user think they have a better Zigbee experience after a reset. but that’s up to you. You already have the latest FW if you look here [Homey Developer Tools](https://tools.developer.homey.app/tools/zigbee) and Firmware Version reports 2.6.3