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Hi everyone, so I haven't flown my copter in a while and when I reconnected it to Mission Planner I did the newest update for Arducopter then redid the whole calibration wizard for accelerometer,compass, failsafes, flight modes etc.

Now when everything has been done I can't arm it at all, because of the yellow blinking light. I believe it has something to do with a failure in the software but I've tried re-flashing it several times and calibrating it. When I press the red safety switch the ESCs also dont make that sound upon pre-arming (I can only do ESC calibration if the quad is armable). the other lights on the Pixhawk are stable green and flashing blue.


Please help thanks!