When Will This Happen?:
Typically your Accessport will go into recovery mode when it's attempting to go through the flashing process and is interrupted. This interruption can be caused by things like unplugging the cable, inconsistent battery voltage, having climate control, or lights on, opening/closing the doors, or having aftermarket electronics which interact with the electrical system even when the vehicle isn't running. This can also happen if a proper battery charger is not present on the vehicle when installing.