Trouble loading firmware on APM 2.5

It's been a while since I have put together a quad with an APM board. Whenever I go to the upload new firmware page, it prompts me to disconnect the board from the computer in order to load the firmware, once I do that and click on "multicopter 3.3" it tells me there was an error loading the firmware? Am I missing something? Thanks

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Replies

  • Thanks for the reply...what is the best way to go about doing that?
  • AC 3.3 won't fit on an APM 2.5 you need to go back  to AC v3.2.1

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