Update FiPy Firmware without Expansion Board

If I don’t own an expansion board for the FiPy, am I able to use the PyTrack board instead to update the FiPy’s firmware?

Sorry, I miss read what you are trying to do, updating with the PyTrack is fine.
https://docs.pycom.io/gettingstarted/installation/firmwaretool.html#second

Found the reference under the Exp 3.0 heading, thankyou!!