It looks like the GPS module on my first m4 v2 board has died. No position fix after 1 hour on either dipole or patch antennas.
I've tried the uBlox diagnostic program but don't have the required degree in electrical engineering to understand it. I was hoping it would come up with something like "ublox 8, firmware xxx, working/ not working" but is too complex for that.
Is there an easy way to check GPS function or, as last resort, can an external GPS unit be connected somehow?