I cant remember how to do this,I have it on 8gb stick. every time I take it to down load on the bike not reading it .It shows up as a zip drive on my PC,seems like I had to unzip it first in the past before plugging into the bike,Using windows vista
You have to extract and copy the actual file inside the zip folder to the flash drive, not the zip folder itself.
Download the latest software version from harley-davidson.com a. Select "Download Software Update" for the appropriate system.
b.
When prompted, save the compressed file to your computer desktop.
c. When the download is complete, copy the file within the zipped folder to the root directory (the first or top most directory in a file system) of a USB flash drive that is 8 GB or larger. d. Turn your vehicle's ignition switch to ACCESSORY. (Keyless ignition vehicles: press and hold the trip switch for more than two seconds).
e. Turn on the audio system and connect the USB flash drive to the audio system's USB port.
f. The audio system will detect the new software available and ask if you want to update. Select “Yes”. The display will prompt you to remove the USB drive when the update is complete.
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Jerry