Hello first of all forgive for my English, I bought a m600 with a3 updated a3 pro but I get that the imu 1 is disconnected however the GPS of that imu works perfectly, if I connect the imu 1 to the port of the imu 2 is activated . Really that is so The assistant 2 I can not change the values ​​X-y-z of imu 1 but of imu 2 and 3 GPS. I have the 3 defective?

Hello first of all forgive for my English, I bought a m600 with a3 updated a3 pro but I get that the imu 1 is disconnected however the GPS of that imu works perfectly, if I connect the imu 1 to the port of the imu 2 is activated . Really that is so The assistant 2 I can not change the values ​​X-y-z of imu 1 but of imu 2 and 3 GPS. I have the 3 defective?