Just thought I'd practice late afternoon with the P4. All was working 2 days ago so didn't expect a brick drone. Powered things up as usual, "Safe to Fly" lit green but no audible message about home point and a red indicator on the •))) display along with no satellites. Clicking overall status I get "Gimbal Cannot Receive Main Controller Data"...contact DJI if it doesn't clear after restarting.... I have to say that in DECADES of buying bleeding edge technology I have never seen a device as fickle and customer service as bad as DJI's. I am calling the Apple store in hopes I can get a refund. Anyone want to buy an extra battery and rotten HDMI adapter?