Looking at the docs for my HD/Sena Headset, when I used the Headset Firmware updater, it has a provision for updating the WHIM as well. That tells me you can connect a computer directly to the WHIM and update firmware. That is probably what they mean when the computer can see it. It could be that a connection is loose. When I watched them install the WHIM in my new bike, they had to remove a lot more than I would have thought to install a module on the radio (they had to pull the tank and open the wire tray underneath, for some reason).
Also, the WHIM is made by Sena, who knows who really makes the HD Radio. The two have to be in agreement as to how they talk. Could be some kind of a mismatched firmware between the two.
In theory, Theory and Reality are the same. In reality, they are different.
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