Very simply I can't get it to work properly.
The OSD has the latest firmware and I have managed, eventually, to upload a .bin file which is what you see heads-up.
Initially the GPS on the heads-up shows all zeros which I guess is because the GPS has not yet found a satellite. If I disconnect the GPS all the other values work (voltages etc).
I have connected the GPS to u-centre and this shows the GPS working and finding a fix in 3D.
If I plug it all back together again I get no OSD output at all but I do get camera images.
If I then reload the firmware I get OSD output but nothing from the GPS.
I have looked at the settings for the GPS but I am not sure how these relate to the OSD.
If anyone has any ideas I would be grateful to hear them.