I have, works with no issues if needed, but I have the newer display as my main. Heres a simple test that the guy from fish hawk had me do to see if my old probe was shot (or in other words was going to have to buy a new X4).
Have a good 9 volt, make sure the light is blinking, put the flat round spot facing upwards on your jaw bone. You should feel a slight click vibration evry few seconds. This apparently denotes the probe sending the signal. If its not clicking, even though the red light is blinking, its shot.
Hope this helps.