Installing DFU driver
If this is the first time you've updated your FlySight's firmware, chances are you will need to install the Atmel DFU driver.
Add New Hardware
If the Add New Hardware dialog appears automatically, you can skip to the next step. Otherwise, you will need to open it manually. To do this, open the Device Manager, located in the Windows Control Panel. The Device Manager should show one "unknown device".
Right-click on the device, and choose “Update Driver Software” from the context menu. This will open the “Add New Hardware” dialog box. In the “Add New Hardware” dialog box, choose “Browse my computer for driver software”.
In the dialog box that follows, locate the FLIP USB driver. This is usually located in “C:\Program Files\Atmel\FLIP 3.4.1\usb”. Click “Next” to install the driver.
You've now installed Atmel's DFU driver. Continue with the next step.