I have a problem in my OpenWRT router when I try to upgrade my router
(TP-Link TL-WDR-3600) to openwrt firmware via web ui. Now my router is bricked and I can't connect
command prompt. But the Default gateway is missing.
Finally I try to connect via USB to serial cable using putty.
But the putty is shown a blank screen for a long time. ( 30 minutes ).
I am really hopeless, I think my router is seriously crashed.
Could you please suggest any advice?