Thanks for this information. Sorry for the delayed response, but I was out of town and just got back.
I ran through this procedure step by step. When I inserted the flash drive the screen indicated "updating system software." After about one minute I got a message similar to "Sirius Software updated" and a minute later a message that "system software updated." I received the message "you may remove your USB" and something like "updates will take effect next time you start the engine." With that said, I'm still running 3.0 and no kind of update occurred.
Might you have any other suggestions?