well, here is an easy debrick method :
1)download TinyPXE.zip and unpack it.
https://anonfile.com/lep8Caybo9/TinyPXE_zip
2)connect ethernet cable to the router, set static ip to your local network(192.168.1.x)
3)turn off your router and hold down the reset button then power on your router when power LED start flashing slowly release it .
4)run pxesrv.exe (it is fully configured), click "Online"
wait 7-10 minutes when power led turns blue power off your router then power on it.