It's hard to say exactly what went on here today with the update. I was so excited to see an unexpected update for the
SC and the DJI Go4 app, that I did not read all the instructions before downloading the update to the
SC via WiFi. Imagine that! So after downloading, I started reading the posts here and saw that the update was supposed to be done with the DJI Assistant 2 app, so I didn't hit install, and tried to hook up with my computer. I first updated Assistant 2 to v2.0.10. I couldn't get that to work either, because the computer never saw the
SC. I went back and figured I would try the download as that has always worked for me. This time, all I got was 1%, and it never went further. I tried other USB ports, even a 2.0 port, and that one at least made a sound when I plugged it in. Still no luck. I did all the steps that the
SC User Manual said to do under System Update with Assistant 2, but without the USB connection, that was doomed. I restarted the
SC several times without success. Then I thought maybe because I had already downloaded the update, that's why it wouldn't hook up with Assistant 2, kind of a dumb idea, and even dumber, I removed the SD card from the
SC figuring maybe the download was there. Well, when I restarted the
SC and it asked if I wanted to install the downloaded update, I said yes, and it started at 5%, and kept on going. It completed the install, restarted and everything worked! It updated DJI Go4 too. It was definitely the WiFi download that worked, because I never was connected to the computer via USB. Later on I read a very good description of how to fix the USB problem by
@PAW in post #22. I tried that and I noticed that I didn't have the MTP device in Portable Devices under Device Manager. I then reread that great post and saw that there was a screen that would pop up on the
SC itself asking how you wanted to use the connection. Once I saw that and picked "Transfer Files", I heard the usual sound of a USB device connecting, and MTP appeared in Device Manager, and without an error no less. Then Assistant 2 also worked and I could see the proper updates were installed. Well that was a long story, but I hope it will help someone.