Archer C7 V2, firmware: 3.14.3 Build 150617 I tried to update the firmware to a newer one I found from the TP-Link site but it gave me an error.

Both bands has different SSID and different passwords but still it shows a "wrong password" message for the 5GHz band while the 2.4GHz band works correctly.

Model : Hardware Version : Firmware Version : ISP : Wifi password shows as incorrect in the 5GHz connection although it's the same password as 2.4GHz and it just happened randomly. It worked before...