I did try to use a Keil example. But every time I downloaded it onto a chip, I could no longer reuse the chip because I was unable to bootload. My application uses a config button on the panel to trigger the bootloader and since the example didn't contain that config button SW it wouldn't work. So I did try to add just the logic that recognizes the config button to the example but it ended up being a rather large part of my SW and I felt I was better off just trying it with my application after all.