TomatoUSB

I got an RT-AC68U and loaded Shibby's AIO release for the router. I was able to configure it and it worked for a few days. Yesterday the router became unresponsive and so I wanted to re-flash firmware on it. I cannot get the router to enter into rescue mode with either holding down the reset button or holding down the WPS button. The only lights that come on are the LAN light (connected to the laptop) and the USB 2.0 light. What else can I try?

I just had an RT-N16 do that. I was able to recover it with a TFTP flash of the Mini firmware. The larger size firmware would not stick. After it loaded the Mini I could upgrade back to the Mega version.