You can also follow this tutorial.
We just released a new firmware for the adapter. This firmware was totally redone using V-USB library. This insure device stability and compatibility, plus it permit USB reflashing of the device, in case of a later firmware release with more features. Every new order will be fullfilled with this version pre-installed.
Note that this firmware can be reflashed using the USB utility only with release 2.0 or more. The only way to reflash a prior version is using the ISP hardware method. Please contact us for more info.
Utility to reflash the device is available here: HIDBootFlash.zip
To reflash the device, simply connect the adapter in the USB port while the joystick’s button is pressed. Keep the button pressed until the device is reflashed using the uitlity. DONE!