Hi
I have a DJI tello bought 6 months ago. Since last month whenever I am trying to connect it to my mobile, it is showing Error 203. After a little search on the internet I found it is about battery problem. Did restart, updated firmware but nothing works. Can somebody help me please?

Dear customer,
We are so sorry to hear this issue. Have you ever try to force upgrade the firmware in loader mode? Please hold the Power Button for 5 seconds when the Tello is powered off and release it when the green indicator turns off. Then the indicator will pulse red. Connect to the Tello's Wi-Fi and go to Setting - more - firmware version to upgrade the firmware again. After upgrade successfully, please confirm if the Error 203 still shows in the APP. If yes, please contact us via support@ryzerobotics.com.
I hope my answer can help you. Thanks a lot.