# Raspi4 conbee 2 failed to reconnect to network

**URL:** <https://forum.phoscon.de/t/raspi4-conbee-2-failed-to-reconnect-to-network/4929>\
**Category:** Advice\
**Created:** [June 14, 2024, 7:58am UTC](https://forum.phoscon.de/t/raspi4-conbee-2-failed-to-reconnect-to-network/4929 "2024-06-14T07:58:36Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![benuli](https://forum.phoscon.de/letter_avatar_proxy/v4/letter/b/59ef9b/32.png) [@benuli](https://forum.phoscon.de/u/benuli)\
**Post date:** [June 14, 2024, 7:58am UTC](https://forum.phoscon.de/t/raspi4-conbee-2-failed-to-reconnect-to-network/4929/1 "2024-06-14T07:58:36Z")

</div>

hi,  
I’m new to deconz and conbee 2 and try to get it up on my raspberry 4 with dietpi. After reading the advice from here:  
[https://phoscon.de/de/support#faq](https://phoscon.de/de/support#faq)  
and here:

> <https://github.com/dresden-elektronik/deconz-rest-plugin/issues/6937>
>
> \## Describe the bug
> 
> After a sudo apt update && sudo apt full-upgrade and a re…boot deconz no longer connects to the conbee 2.
> The problem exists has occurred on three different Raspberry Pi with deconz.
> 
> The deconz window cannot be closed via the gui. There is a prompt to end the process. If this is confirmed with yes, the deconz window returns that the process is not responding. The window freezes.
> 
> Raspberry Pi 4 Model B Rev 1.1
> Debian GNU/Linux 11 (bullseye)
> Linux 6.1.21-v8+
> deconz 2.21.02
> ConBeeII\_0x26780700.bin.GCF
> 
> The following packages were installed:
> !\[IMG\_4413\](https://user-images.githubusercontent.com/27686185/235407451-055acfe2-1fc8-4181-8d1d-2e37c3312a72.jpeg)
> 
> !\[IMG\_4415\](https://user-images.githubusercontent.com/27686185/235407613-b83e893b-d99e-4f81-b7de-0993a5426050.jpeg)
> !\[IMG\_4414\](https://user-images.githubusercontent.com/27686185/235407616-9009bd13-8b8c-4281-9b42-9ac2c81d5458.jpeg)

I think I have done everything that I can do. dietpi ist uptodate, deconz fresh installed, firmware of conbee 2 flashed today.

I start deconz after reading above forum thread like this:

```auto
 deCONZ --dev=/dev/ttyACM0

```

I still get in deconz debug view level INFO this:

````auto
09:44:54:673 wait reconnect 1 seconds
09:44:54:796 COM: /dev/ttyACM0 : ConBee II : dresden elektronik ingenieurtechnik GmbH (0x1CF1/0x0030)
09:44:54:814 COM: /dev/serial/by-id/usb-dresden_elektronik_ingenieurtechnik_GmbH_ConBee_II_DE2668136-if00 / serialno: DE2668136, ConBee II
09:44:54:818 auto connect com /dev/ttyACM0
09:44:55:674 failed to reconnect to network try=6
09:45:00:674 try to reconnect to network try=7```
````

---

<div class="post-metadata">

**Author:** ![benuli](https://forum.phoscon.de/letter_avatar_proxy/v4/letter/b/59ef9b/32.png) [@benuli](https://forum.phoscon.de/u/benuli)\
**Post date:** [June 15, 2024, 3:29pm UTC](https://forum.phoscon.de/t/raspi4-conbee-2-failed-to-reconnect-to-network/4929/2 "2024-06-15T15:29:55Z")

</div>

Strange things. After trying all usb ports of the raspi, trying some different cables and finally flashing firmware for a second time deconz now connects to the conbee 2.

---

<div class="post-metadata">

**Author:** ![Smanar](https://forum.phoscon.de/user_avatar/forum.phoscon.de/smanar/32/60_2.png) [@Smanar](https://forum.phoscon.de/u/Smanar)\
**Post date:** [June 16, 2024, 9:36am UTC](https://forum.phoscon.de/t/raspi4-conbee-2-failed-to-reconnect-to-network/4929/3 "2024-06-16T09:36:55Z")

</div>

Can check the firmware using `GCFFlasher_internal -l` or trying the conbee on another host.

Else for the USB port/cable all is possible, USB2/USB3, issue on cable, I know an user that have better result depending the conbee orientation.