Trying to load firmware on my pixhark4 and I keep getting a upgrade cancelled error message
What QGC version is that?
Have you tried another cable or another USB port? Or not using a USB hub, if you are.
Have you changed the bootloader on this Pixhawk 4 at all?
Sorry, the response comes a bit late. I assume you have fixed the problem in the meantime. Maybe you can share how?