Apm 2.8 bad compass error

Hi friends
im new here i had purchased APM 2.8 when i try to calibrate compass error 99 appears

tried with and with out MAG jumper

and im not using external compass
anyone can help pls support

As mentioned here, those boards are no longer supported.


…but if you insist on trying check this post out:

thank u brother

i will check and update the feedback