Originally Posted by Solaris81
So do you not think this could be related to the software version being lower than they would ship with then? I need 4.1.0 kernel and image files to check this.
You can upgrade to 4.1.0 after installing 4.0.0 firmware. Download the firmware update from amazon, and install it. Then try registering. In my experience, some K4 demos can be registered and some cannot.