sorry marco said this
Reset "M8N" to the "U-Blox" default, save the parameters then repower the unit.
Then set your M8N gps with the following configuration parameters:
PRT (ports): UART 1 -> Protocol out- UBX
Baudrate: 38400
RATE (Rates): Measurement Period 200 ms (5 Hz)
NAV5 (Navigation 5)...