I have an APM 2.6 that I just built up.
I loaded 3.1.5 on it and went through the wizard. Now, I am seeing Bad Gyro Health and the gyro is tumbling.
In some testing, I loaded 3.0.1 and the gyro issue goes away and the bird is actually flyable.
I've done this test a few times hoping that it was an issue in setup, but I always get bad gyro health on 3.1.5.
Is this a software bug?