Hello all i'm another newbe to the drone world. My new spark was flying just fine and I was having great fun with it. Then I decided that I needed to do the firmware update before they shut me down. I was using the DJI Go 4 app with my ipad and was able to download the new firmware fine. Then when I was up uploading to the controller the update failed. So I tried to restart the upgrade but could not connect to the controller as it no longer puts out a wifi signal. Now when I power on the controller after the battery lights blink and come on all I get is a blinking red led. Has any one else have this problem? If so how do I fix it.