Ublox F9P auto configuration failed

I am using the pixhack v3 and the cuav v5 flight controller to configure the ublox F9P, and the flight controller will prompt me to check the GPS configuration. This is the error message:

I tested that the flight controller has configured the f9p module, but did not save parameter (the flight control parameter GPS_SAVE_CFG=2, it seems to be invalid).

I’m afraid I don’t know much about this… perhaps @WickedShell has some ideas…

@tridge is currently doing some f9p testing too

https://github.com/ArduPilot/ardupilot/pull/10951 should have fixed support for UBlox F9’s, but it hasn’t been back ported to any of the stable releases.

can you post the exact fw version you were using at the time?