Nicely done. You didn’t have to reboot because /usr/lib/lua/gl/wifi.lua is a Lua script. OpenWrt Linux, being under the hood of the GL GUI, uses a lot of Lua. Scripts aren’t compiled programs so they’re run ‘on demand’ with whatever they’re found to be containing… like you edit(s).
The country codes appear to be ISO-3166-1/Alpha2 values.
Don’t forget to make a backup of your custom workaround.
