Tello fails on powerup! Keeps trying to self-check and fails at different points. As we all know, when tello's power on, it lights up steady green, then fast red 5 times, then it normally flashes a series of colors 3 times before it flashes yellow fast indicating no wifi connection. This particular drone stops on a steady color for 5 seconds and then flashes colors again to stop on a different color for 5 seconds. It will do this until it overheats and turns off, approx 2-3 minutes. Already flashed new firmware. Safe mode does work but can't really do anything other than firmware updates. ANY THOUGHTS???