So, I was flying my MPP earlier this evening and I was approximately 135' in the air and somewhere in the neighborhood of 800' out, just a guess on those though. I looked up at the drone, then when I looked back down at my screen, it said disconnected in the upper left had corner of the DJI GO 4 app, and everything went grey. I didn't notice the other stuff along the top, because I went into full panic mode. I hit the return to home button on the controller and it made the tone like it normally does, and within probably 10 seconds, the drone returned home. There wasn't much wind at the time, and the drone didn't seem to drift so I'm not sure if it truly "disconnected" or not. Hoping you guys could maybe have some insight into this. Makes me kinda nervous to put it back up in the air. When I came back in I was messing around in the settings and noticed beside the Firmware button, there was an error that said ABNORMAL! when I click it, it says Calibrate the Vision Sensors with the DJI Assistant on Pc or Mac for higher accuracy. I downloaded the assistant, and went through the front and downward calibrations, then it started the progress bar and gave me a calibration error. Now the assistant won't even recognize my MPP when I plug it in the the pc. Any ideas, I also used an older version, it does recognize it, but still get the error after the calibration process.