Fixing "Retry 0: Got TIMEOUT"

This is for OSX specifically, Windows may have a similar issue if you are accidentally using the wrong COM port.

Here is the solution:

If you are using Intel Arduino IDE with either Intel Galileo or Intel Edison and you are getting the following error: “Retry 0: Got TIMEOUT” – it is likely that your IDE has automatically selected the wrong serial port by default.

Click Tools -> Serial Port -> /dev/cu.usbmodemXXXX. There may be several, try a couple of them with the Blink sketch to find the proper one.

Note: Don’t try to use the serial port with naming convention /dev/cu.usbmodel-XXXXXXX (8 characters and a dash).

This may also help for “Retry 0: Timeout on pathname” and “Transfer Incomplete.” This error may occur if you plug in two Micro-USB cables into the Arduino breakout board. The first cable (when plugged into the middle micro-USB port) will reveal a number of ports specifically for use with Arduino. If you plug in a second cable, you will get two more which are useful for getting terminal access to Edison but will confuse Arduino IDE.