New firmware has been released for the Mavic Mini. Here are the notable changes:
Added feature to unlock GEO zones (requires DJI Fly 1.0.4 or later)
Takeoff is disabled when the GPS signal is weak (less than 8 satellites) and the environment light is not sufficient (can be disabled in DJI Fly)
Compass calibration is required before takeoff when the environment light is not sufficient and the compass experiences interference
The full list of changes are available in the Mavic Mini release notes on the Mavic Mini downloads page.