That happened to my Rog 3. I had so much heartache too. Now it's sits in a stash in hope that future technology can retrieve it.I had just backup my Rog 5 after reading your post. Sounds like the update fried our WiFi IC and downgrading won't fix it....
I got the same problem too. By my Bluetooth does not work too. I saw various thread on this matter and is hoping to have a solution soon too beside changing the motherboard. Have anyone tried downgrading the updates and if it works? Wanted to ask in ...