PX4 install in Freefly Alta 6?

Hi,
Ive recently had a barometer fail in my Freefly Alta 6, so Im looking to change out the current flight controller (synapse) for a PX4 of some sort, hopefully without too much fuss. I am aware that Freefly are currently installing the PX4 to the new “Pro” series and the ALTA 6 is a case study on the PX4 page, so hoping someone out there has some ideas.
If anyone has experience, advice or input on this topic I would be greatly appreciative of that.
Thanks