Flash OpenWRT firmware
https://openwrt.org/toh/asus/rt-ac68u
# @workstation wget https://downloads.openwrt.org/releases/21.02.1/targets/bcm53xx/generic/openwrt-21.02.1-bcm53xx-generic-asus_rt-ac68u-squashfs.trx ip a add 192.168.1.5/24 dev enp0s25 ip l set dev enp0s25 up # power OFF router # hold RESET button and power ON router # open 192.168.1.1 in browser and upload firmware