Updating firmware

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?