Comments

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  Steve Lewis January 7, 2014 at 1:43pm

  Thank you Bo Wingo! This is exactly what I need.
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  Bo Wingo January 7, 2014 at 1:38pm

  Take a look at the "AC3.1 & blown 3.3V regulator" blog post to understand the issue of the blown 3.3V regulator and how AC3.1 uncovered the issue.  This information should also help you zero in on identifying whether this is actually what happened to your hardware.
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  Steve Lewis January 7, 2014 at 1:33pm

  @John McGrath and others. I am curious about the regulator that has been mentioned. Do you have a location on the board or schematic? I ask because I bought a used APM 2.5 and have had issues with it concerning updating to 3.1. I'd like to replace mine and see what my results are.
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  John McGrath January 7, 2014 at 1:14pm

  Guys if you have a bad regulator why not fix it? Most are all DIY types on here get a soldering iron (low wattage) and replace it then get the better update. If mine was blown thats what I would do.
• Dennis Fuente January 7, 2014 at 1:01pm

  So i went back and installed 2.9b and the same thing occurred bad gyro health prearm health bad on the flight data page and i cannot arm the ESC's funny it all worked prior to updating to 3.1 is there a way to fix it ? not going to purchase another APM any help appreciated.

  Dennis 
• Dennis Fuente January 7, 2014 at 11:30am

  Hi Sean 

   Yes i see that this is a common problem after updating to 3.1 i would think that 3dr would take care of the issue guess not. 

  Thanks for the information i am going to try and go back to previous 2.9

  Dennis 
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  ShadowAir Ltd. January 7, 2014 at 11:25am

  [Moderated comment as an advertisement]
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  Sean Headrick January 7, 2014 at 11:21am

  I had the same problem, likely a blown regulator. seems a pretty common problem. In the "load Firmware" section of mission planner there is an  option at the lower right side that says "load previous firmware" or "load previous version" . You can find version 2.9 there.
• Dennis Fuente January 7, 2014 at 11:14am

  hey guys 

  Is it possible to go backwards in version say from 3.1 back to 2.9 my apm worked in 2.9 but came up with a problem in 3.1.

  Thanks

  Dennis 
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  Essam January 5, 2014 at 10:49pm

  Thank you all; I have making some progress towards my project while reading your inputs