m300

Hi! I am trying to takeoff with my m300 without GPS at all. I switched the controller to Atti mode but with no luck. Is there a way to bypass this DJI restriction?

All in all the m300 looks great and is a step forward. However, I see some potential issues with the Smart controller Enterprise: 1. It doesn't seem to have detachable antennas!? So we need to again crack the shell, drill the plastic,etc...? I expected a more professional solution for something...