Hello William, I am an HP Support Engineer. I am speaking for myself and not for HP but I believe that I can assist you.
You reported a "9.4c06" - however, I suspect you meant to report a "49.4c06". There was a specific firmware fix for 49.4c06 events related to using the FAX address book. Can you check the device EWS and/or print a device configuration page and provide us with the firmware revision? With regards the event, you indicate that rebooting the device causes it to boot to the 49.4c06, have you tried disconnecting the LAN cable from the device with the power OFF and powering it ON without the LAN cable attached?
Please provide us an update.