Hello everyone. I am new here and to the whole DJI world. Over the past two days I've tried a dozen times or so to upgrade my controller to .004. At any given time throughout the process my controller shuts down. Is this normal ? It does not turn back on. With every try I get a failed message. During one attempt it seemed to move into another step called transmission. Biggest question is would it be safe to go fly after all these failures? Also is there a solution for this problem ? Thanks in advance