Change country code Wifi HassOS

Installation Home Assistant OS
1

Hi, does anyone know how to change the country code of the WIFI for hassOS?

I’m having trouble connecting hassio to the wifi. I worked for a long time, but after restarting my router, hassio did not connect to the wifi anymore. After a lot of troubleshooting I discovered that it could not connect to the WIFI because it cannot find the channel in which my router is (13), which is not used in the US. I can set my router to another channel to get it working, but I rather leave it on auto mode. So I have to change country code of the WIFI in HassOS. But how?

2

Check HassOS documentation here: https://github.com/home-assistant/hassos/blob/dev/Documentation/network.md
And here under 802-11-wireless settings: https://developer.gnome.org/NetworkManager/stable/nm-settings.html
You can use ‘channel’ (and ´band’) to set the channel. But you may have to do that each time your router restarts then…

3

I use the channel 13 because is the least used in my area. Unfortunately it doesn’t work by default in hassio, nor with band and channel settings, nor with advices from Home Assistant on a Pi Zero W in 30 minutes.
Did anyone succeed to use the channel 13 and how to do this?