What version of the Arduino IDE are you using? You should be using version 1.5.6-r2. When you go to Tools -> Board, you will find the Due near the bottom under Arduino ARM (32-bits) Boards
What version of the Arduino IDE are you using? You should be using version 1.5.6-r2. When you go to Tools -> Board, you will find the Due near the bottom under Arduino ARM (32-bits) Boards