I have the AC68U and may tell you It is really unlike any router I have had just before with regard to your functionality for resetting it to factory defaults. I did the complete firmware restore and even now was unable to acquire an IP from it (my difficulty was http://192-168-o-1-tenda-11n-wir19629.bloginwi.com/16451451/getting-my-netgear-customer-service-24-7-to-work