Following instructions are provided without any warranty, and may even get you in trouble legally. The instructions are provided for testing, learning, preventing e-waste, and should be use with care. We (including contributers + commentators) are not responsible for any damage to your device(s) or any legal issues.
Instructions have been moved to https://github.com/francoism90/asus-router. :)
Hmmm :-/
Since you have country US as a built-in country, will then setting like
wl -i ethXX country US
work?btw, on which merlin verison are you? (I did not see your router model listed on asus merlin wrt page)