NightHawk MR1100 Wifi Just Stopped Working

Hi

I have been using my Nighthawk succesfully for over 18 months, when all of a sudden it stops broadcastign Wifi channels

I can connect Network cable all is fine, I have logged in and checked the SSID is ticked however still no Joy, in addition to this the SSID does not show on screen

I have also tried the factory reset suggested in other posts but no success

I have also tried to Firmware Up and Downgrade, but either get Error 16 or not meant for this device message

Hardware Version 1.0

Firmware Version NTG9X50C_12.06.08.00 Build Date 2019/10/16

Any help to fix would be appreciated