I bought a crazyflie 2.0 few months back . It fails the self test repeatedly. I tried tapping the ICs which would help the board to pass the self test sometimes and sometimes it doesnt. I'm from India and I had to pay extra 100$ for the product as custom duty and at the end I find it not working. I'm very upset, I couldnt fly it properly even once. Please help.

Regards,
Abhishek