Netgear WNDR4300 TFTP recovery not working

I attempted to update the router via LuCI and the update failed. It seems as though the device automatically went into FallBack mode after a reboot. When attempting to use TFTP to upload a firmware file Tftpd64 shows the transfer was successful. Yet the router does not install the firmware and reboot as it is supposed to.

Any Ideas?

serial console.
what file where you serving via TFTP ?