BROKEN DRONE HELP NEEDED! 

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I recently bought a ez pilot pro off of Facebook marketplace and the drone included had clogged motors so I cleaned them out and replaced the camera and my imputs were messed up so I went into beta flight and flashed it. After flashing it my drone no longer worked and just flashed red when ever I plugged it in and wouldn’t bind to the controller or give an analog signal for the goggles, the gyroscope also did not respond in beta flight the model just sat there and didn’t move it didn’t even give me a button to calibrate it. Please help and Don’t give any bs about recalibrating it or re flashing it because I’ve already tried.

https://reddit.com/link/1rl5e6e/video/znyzewav05ng1/player