Here+ rover compass high offsets

Hi everyone,

Now I’m testing my Here+ set with Pixhawk 2.1.
I have calibrated the compass many times and most of them far from electromagnetic interference in the field. The Here+ rover offsets doesn’t go down from 350 in the 3 axes. This is producing EKF to turn into yellow or red and provoking Land mode to drone in surveys.
Is there anything I can do to fix this or is a hardware problem with Here+?

Thanks in advance.