Word of caution about this to others. Any version beyond 5.4.2 MAY NOT work with older hardware such as TrackIR 4 or TrackIR 3.
I have a TIR 4 and it stopped working after I installed software version 5.5.x as the USB driver was updated. The camera lights up, but the software does not detect anything from the camera’s sensor.
I had to rollback to 5.4.2 and manually update the driver in Device Manager (it’s found in the program’s folder) to get my TIR4 back to life. If that version won’t work with MSFS 2024, I’ll be very disappointed. But it’s almost 20 years old and nothing last forever.