it was a typing mistake, my router hardware version is V3, and recently i was updated my router firmware

Didn't get any solution here, updated my hardware version to V3 and firmware. After that 5Ghz is greyed out, none of the options work. Showing region problem

Hello, I have been using Archer C60 for 2 years, a few days ago I used to use its 5Ghz network, but after the firmware update, my 5Ghz option is gone. I couldn't use 5G. 5Ghz Radio off which I could...