Phantom 4 pro GPS error issuses

I have found many other posts of this problem but have not found an acutal resolution to the issue, please help.
Phantom 4 pro had been flying fine and all of a sudden keeps giving me error “GPS disconnected” and “GPS data error. contact DJI support” and immediately switches to atti mode.
I have seen others with the issue contact DJI and not been helped much. I tried flying different days and different conditions all with the same outcome. here is today’s flight record with completely clear skies.

List of notifications during today’s test flight

I have already updated firmware and since this began I tried doing a firmware refresh which fails to upload and same with downgrade. I have re-calibrated both IMU and COM as well and still continues.
Please help