firmware restoration

RT-AC88U went dead after ASUS firmware update "RT-AC88U_3.0.0.4_380_7743-g2cf84e9". I have read all the threads telling how to get into discovery mode but for some reason it will not. 95% of the time it will not do anything when I put the power on it. There are 4 lights that are very, very dim...

I'm not sold on upgrading from my current RT-AC68U to the RT-AC5300 but got an open box one for "cheaper" and thought I'd give it a try. And I did staring at 1am last night, so probably my failure is due to lack of sleep and not finding the right entry in this forum. Here's what I did: 1) ran...