Per an email exchange with undone their techs concluded the GPS port on the scanner is broke. So at some point I MOGHT send it in for repair.
Sorry... not to beat a 'dead horse'....
Also, don't take their word for it, I'd do a bit of testing and elimination of possibly problems before sending it in.
Does the port otherwise function normally?
(Power/charge the radio and pass data when hooked up to a computer?)
Did you visually inspect the port and actually see bent or missing pins?
Did you try another cord?
Are you 100% sure you have all the radio's GPS settings correct?
Note: I have sent both 436s and 100s in for broken USB ports, so I know full well it happens.
Just trying to help you make sure it (port) actually is the problem