The Due is only supported in IDE 1.5. As far as the Fio goes, if you aren’t getting any error messages, make sure you are selecting the correct board, as well as well the right pin in your code. Also make sure you’ve added in the board support files for the Fio (check the links above). If you are still having trouble after double checking these, please email techsupport@sparkfun.com. They’ll be able to assist you further than we can in the comments.
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