@tryuruf None of those suggestions work. I've already tried them. It's a firmware issue.

@David-TP Are you saying none of your Deco products allow the customer to adjust wifi channel settings or to disable wifi completely? I can't disable any of the bands either. If I go to Wi-Fi...

My ISP is Distributel Canada, reselling Bell FTTH service. They provided a pre-configured Deco X50 with the appropriate PPPoE credentials and VLAN tagging to authenticate on Bell's network. The Deco...