Internet is not accessible after DHCP lease expires on wired devices and wireless devices only happen on the latest firmware on Archer A7 v5(EU) (router page is still accessible and all the devices on

I am needing the firmware for the TP-link Archer C20(INWISP) AC750 version. I flashed the generic C20 version via TFTP to update and realized this isn't going to work. I am now in a bootloop.