The download feature worked great, it figured out my radio type and did the right thing. I saw the note live update and save a CSV copy, edited it and when I tried to upload the CSV file to the radio, it detects my COM port just fine, senses a Kenwood radio, but defaults to 'Generic' and does not let me change it. An upload attempt fails complaining about not being able to connect to generic.
I think you're the second person in a week to be confused by this, so I clearly need to change the interface just a tad. Sorry about that.
First off, you can't upload a CSV file directly to any radio. What you can do, is import a CSV file into a radio. So, in your case, after you make your edits to the CSV file, you would go back to "Download from radio", and then do "Radio->Import" and choose the CSV file. Does that make sense? The "Download" terminology may be a little confusing, given that it's a live radio and you actually want to upload to it, but I'm not sure what word would be better and still fit the clone and live radio models. I used to have two different menu items depending on what type of radio was being used, but of course, many people don't know which to use for their model :)
Note that you *can* just make the changes you want directly in the editor while in live mode and they will be sync'd to the radio in realtime.