Most probably your nvram is corrupted. Don't short any of the flash-rom pins, as the Deluxe bootloader offers a safer way for resetting the nvram to default.
With the router powered off, connect gpio7 to GND. Apply power and the router will reset the nvram and then restart. Remove the connection.
This works on my Deluxe; your mileage may vary.
I don't know which is the right choice for you, but if you have some "technical skills" you will open the case anyway, sooner or later.