The last step in the update process seems to be rebooting the remote controller. This will interrupt the USB connection to the GO app. Sometimes the GO app will not detect the reconnection after the remote is up again, so it stays at displaying 100% and does not say finished. Closing and restarting the GO app should do the job.
hi gerds, when I would restart the app it would show update downloaded but the blue button to install would not let me click on it, dead button everytime, I uninstalled the app a few times and never worked. I tried dji assistant and it said it was complete and whatnot but when I plugged the ipad back in it would keep telling me about the new firmware. used my android phone and did everything in 20 minutes. weird.