I just bought an ASUS RT-AC5300 and for the first hour it worked just fine. Then I've seen there's a newer firmware and I've updated (to 3.0.0.4.380.3941).
Since then the 2.4GHz network doesn't work anymore. It shows up in the interface, I can configure it (though when I try to select a channel I can only select from 36 up, not from 1 to 11 or 13) but when I connect to it I am actually connected @5GHz. Also, the second 5GHz network's SSID doesn't show up anymore.
I've downgraded to...
2.4GHz band missing on RT-AC5300
Since then the 2.4GHz network doesn't work anymore. It shows up in the interface, I can configure it (though when I try to select a channel I can only select from 36 up, not from 1 to 11 or 13) but when I connect to it I am actually connected @5GHz. Also, the second 5GHz network's SSID doesn't show up anymore.
I've downgraded to...
2.4GHz band missing on RT-AC5300