Well, it would be best to send an email to support@eventide.com. Let us know if you have access to a Windows machine; if so, we might send you an alternative updating application. Otherwise, we might send you the PitchFactor update software so you can try to install that directly with the Eventide Direct Updater on Mac even if the PitchFactor is appearing as an invalid device. Also, let us know if when you turn your PitchFactor on does the display light up immediately, or is there a 10 second delay before it comes on?
