I cannot figure out how to batch download vids and pics from my MA2 (or iPhone). I can download individual files, but after I do that, the files on my iPhone still show as not downloaded. I have spent a bunch of time trying to figure this out, but honestly I am on search overload now and tired of trying to find answers to simple questions. The DJI documentation is terrible, and doesn't adequately explain much of the most basic stuff IMO. Help!