This is quite a stupid question; I apologize in advance. I was trying to configure my Buffalo WZR-600DHP to connect to a VPN and send all traffic through it. I've managed to completely screw up the routing table, so I want to reset the unit back to factory settings. Unfortunately, I can't for the life of me find the reset button. As I am visually impaired, the diagrams in the manual, if any, do not help me. Can someone please describe the location of the reset button on this type of router? I've spent all morning trying various buttons and places that look like pin-hole reset buttons, and just haven't had any luck. This is incredibly embarrassing!
I had just the same problem with my Buffalo WHR-HP-GN (very similar to your model).
After a long time searching for it, the reset button was behind the support foot, the stand that makes the router remain in vertical position.
In my model removing this stand was not easy, and I finally broke a bit the piece. Good luck for your attempt.