What Hardware version is your router? Look at sticker under the router case:
>> DIR-866L (Hardware version A1)
Link>What Firmware version is currently loaded? Found on the routers web page under status.
>> 1.02, 10, Apr, 2015
What region are you located?
>> Texas
Enable or disable wireless under Setup/Manual/Wireless.
>> Under Steup, there is no "Manual" option. Please guide me with appropriate option that belongs to this router.