Tried CTRL+Z also, but it is not working. No problem with ntp start/internet connection(see the updated attached log). looking forward for other options.
I am trying to access bootloader of asus rt-ac68u router using serial port and putty. Unable to get cfe prompt in the terminal(even after pressing ctrl-c or Esc). That bootlog never ending and the log is in waiting state with the message saying "starting ntp.."(see the attached log).