wpte
Occasional Visitor
Upgraded to 380.66_2 on my RT-AC66U last night. This morning I rebooted it having some Xbox One issues and now my 5G will not come back up. (Says Channel 0, tried manual channel no luck). Doesn't show up to any devices. Tried going back to 380.64, Tried factory reset, Rebooting etc etc.. No luck. 5G appears to have been killed for me by 380.66_2 :*(
Try factory reset by holding the reset button for a while. Also I'm a firm believer of doing firmware updates/downgrades using the Asus recovery tool, it's just gives me better results
For me it's the same on 2.4GHz on my RT-AC87U. The router reports the network should be up but no device can see it. Tried using a wi-spy to measure activity from the router, just nothing.