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Unplug any USB or power cables connected to the Intel® Edison.
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Get the latest Yocto firmware image for the Intel® Edison.
- On the USB key: downloads → Windows/Mac/Linux → edison_media
 - Copy edison-iotdk-image-[version].zip to your computer.
 
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Launch the Flash Tool Lite program installed in the previous section.
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Click Browse in the upper righthand corner. Select edison-iotdk-image-[version].zip file.

The tool extracts the zip file and loads FlashEdison.json.

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For the “Configuration” drop down, if your host machine is:
- OS X or Linux: choose “CDC”
 - Windows: choose “RNDIS”
 
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Unplug all cables from the Intel® Edison.
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Click Start to Flash.

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When you see the prompt, plug a micro-USB cable into the top micro-USB connector on the expansion board.

You should see the Flash Tool detect the board and begin the flash process.

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Wait 3-4 minutes for the firmware progress to finish. Do not unplug the board during this time!

 
Once the flashing is completed, the board will restart and you will see a “Flash success” indicated in the Flash Tool.