I pulled out my M2Z and smart controller yesterday to get ready for today's flight. The controller gave a message - needed a firmware update to V01.01.0076. After one try I got an error message - needed more memory, can't do the install. After checking, I saw I had plenty of memory.. I checked youtube, and found nothing on the topic. I tried the DJI tech hotline phone number and after a little bit of a wait, I got a nice, patient, and knowledgeable person on the line. She walked me though a couple of things and then determined I needed to do a factory reset. After the factory reset, the SC happily took the firmware update. After bending over thanking the tech person far too times, I went out to give the drone a try. I got an "error 108" message, "cannot take off". I found this kind dude on youtube:
and followed his steps. Problems solved, the drone is up in the air and happy. Thank goodness for kind people who can walk me away from the ledge and give aid when I'm up against a wall.