Thank you all :)

I have tried to leave it for many hours, but nothing happens. Also, I found that all Ethernet ports behind the router are working as a network switch, and I still cant access the settings or hard...

Model : Hardware Version : Firmware Version : ISP : I have Archer c2 ac750 router broken and I tried to flash the latest firmware "Archer C2(EU)_V1_170207" using tftpd64, after it finished...