I was having issues getting mine to reset just now. You know its working properly when you see the flashing sequence on the power LED as described below:
The correct way:
After the router boot (the router have to boot up), simple hold down the reset button, the first led (power LED) will start to flash. It will flash once per second. 3 seconds later it will flash twice per second. 8 seconds later it will flash 4 times per second.Now release your finger and wait the router to reboot.
Here’s a link to the original post: