I didn't receive the firmware, did you sent to me too?

@David-TP I'd love that! Is there a step-by-step way to test that?

My notebook is 3m away from my second Deco. The first Deco is a little bit farther, I'd need to run a cable through walls and stairs to link them both with cable

@Alexandre. Thanks, I'll try this one, but I still want the 2.4ghz for the hard to reach places in my house, so I'll still need to enable it again.

I have to Decos, 1 on the first floor(livingroom) and one on the second floor(bedroons and office). I'm working in my office with a Deco about 3m away from me and my macbook is connected to the one...