Fortunately, i bought @ BB & can return or exchange if i want, i just don't know if i want to return it or exchange it, i almost lost hope in DJI units..
Jer,
Before you give up p, try this. Erase the sd card completely and put only the downgrade .bin file on the card. Make sure your RC is off. Take a paper clip and familiarize yourself with how the link button works. Once you "feel" how it works find a way that you can hold it in while powering up the bird. Now hold the link button in and power up the bird. Listen carefully, once you hear the first "zup, zup" sound, quickly release the link button. Check the front gimbal LED, it should start blinking red and green. If it blinks red and green, leave it alone until it turns a steady green. It could take anywhere from 10-25 minutes to complete. Don't worry about anything it's doing as long as it's still blinking red and green. See what that does.
Jerry