I have an AxeFX II Mark II and I always, ALWAYS, always download the XL firmware...every...damn....time. I just got so used to clicking the top link on the firmware download page. With the XL out, my machine is no longer top dog :-(
But I can verify that Fractal Bot dutifully disallows me to load the XL firmware. Nice of it to prevent me doing something that could mess up my AxeFX.
same exact experience here.