OK: I am slowing getting to understand some of the confusion here.
I used the phrase: "must be installed first..."
Remember, I am a Newbie when it comes to this procedure and I appreciate all the advice!
Looking at the image included with the Installation instructions, it has a box labeled: "Select Firmware v.4.3.6" which is physically located just next to another box labeled: "Firmware Installation Instructions"
So in my Newbie defense, I apologize for "confusing" that the Radioddity v4.3.6 Firmware was being "installed" by your software.