I just bought a mint condition Tello Drone from a 3rd party seller. Drone was in good condition besides a chipped bumper that surrounds the drone. We drive home and the drone charges but weirdly enough the drone powers on for a few seconds with a green light, then it turns red for a second or so and then turns off completely. My brother has a tello drone and has extra batteries. He gave us a fully charged one and it still turned green for a bit, then red, and then off. Even when charging it shows a red light for a second and then theres no indicator of it being on. I heard it needs a software update but i have no idea how i can update the software without connecting to it via wifi. (The drones wifi wont show up because it's not online for long enough). Thanks in advance for the help!