RT-AC68U Missing 5GHz Channels

[Khadanja]

My Chromecast won't connect to Wi-Fi suddenly so checked channel as I remember it has issues with higher channels but I only see channels from 149 to 165. Please see results of commands below. I have set to NZ but GUI still shows Australia & I still can't see other channels after rebooting several times.

nvram get territory_code
AA/01
nvram show | grep country_code
wl0_country_code=CN
wl_country_code=
wl1_country_code=CN
Not sure where CN came from!
nvram set pci/1/1/ccode=NZ
nvram set pci/2/1/ccode=NZ
nvram set wl0_country_code=NZ
nvram set wl1_country_code=NZ
nvram set regulation_domain=NZ
nvram set regulation_domain_5G=NZ
nvram get wl1_country_code
NZ
nvram show | grep country_code
wl0_country_code=NZ
wl_country_code=
wl1_country_code=NZ

Regardless of what channel bandwidth I choose, only see below channels.

 

[Khadanja]

Just ran the command again & it's back to CN!

nvram show | grep country_code
wl0_country_code=CN
wl1_country_code=CN
size: 54234 bytes (11302 left)
nvram get territory_code
AA/01

 

[drinkingbird]

Just ran the command again & it's back to CN!

nvram show | grep country_code
wl0_country_code=CN
wl1_country_code=CN
size: 54234 bytes (11302 left)
nvram get territory_code
AA/01

As far as I know you can't change the country code of a router. It is hardcoded during manufacturing. There are some hacks out there, but typically they get eliminated with newer firmwares, then someone has to come up with another one.

It is possible something in your factory partition got corrupted, there was another thread about that here recently. See if you get the same error as the other person in the GUI.

RT-AX82U - "The country code is not exist! Please enter Country Code."

After I upgraded from the stock firmware to FW_RT_AX82U_300438650289, both of the WiFi bands no longer show AND the following pop-up is displayed. The same behavior persists after I upgraded to the latest firmware FW_RT_AX82U_300438823285, and downgraded back to the stock firmware. Reading the...

www.snbforums.com

 

[ColinTaylor]

You can't set arbitrary country codes via nvram, they will just be reverted by the firmware. The only changes permitted are those made through the GUI. Try experimenting with the Australia and Europe option and see what 20MHz channels become available.