Seems there is a problem using Mac computers because I grabbed my Windows tablet and was able to update my Gen 1 BlueBus to firmware 1.3.0 without issue once I updated my device driver and assigned COM1.
https://live.staticflickr.com/65535/...d4fe72fc3c.jpg
As you can see, I started with firmware 1.1.18 :)
https://live.staticflickr.com/65535/...9889dafc72.jpg
https://live.staticflickr.com/65535/...4393a689a2.jpg
The firmware update tool for Windows seemed to function flawlessly
https://live.staticflickr.com/65535/...a59e12aaa9.jpg
Not sure why the Mac version is not working . . .