For any Holybro GPS Module with IST8310 compass, if you are unable to preform normal compass calibration "compass dance" for any reason, set parameter COMPASS_ORIENT=6 (Yaw270) for proper compass orientation.
PX4 Guide for RTK PX4 FirmwareGPS Heading with Dual u-blox F9P is supported in the both DroneCAN and UART version. The DroneCAN version requires a different firmware and can be found in the guide below.RTK GPS Heading with Dual u-blox F9P | PX4 User GuideRTK GPS | PX4 User GuideHolybro H-RTK ZED-F9P RTK Rover (DroneCAN […]
Multiple Point to Point Setup with Sik RadioPoint-to-Multipoint Setup with Microhard Radio
The Firmware upgrade process is the same as the ZED-F9P, please refer to the link below.u-blox F9P Firmware UpgradeDroneCAN FW Upgrade