After endless trying to update with all sorts of problems along the way, I finally chatted with dji. The agent was very helpful and after 2 hours I finally had everything set up. What it amounted to was the dji go 4 app was corrupt and had to be reinstalled.You probably now have to update the remote and re-link the RC and aircraft. Lots of threads here and videos on how to get er done. Don’t panic, keep reading.