Well, you've to use search first.
As for firmware restoration - you've to disable ALL network adapters (including IEEE1394, bluetooth, Wi-Fi, etc) except wired ethernet and use it for firmware restoration.
As for firmware - to reset to defaults you've to press the button and wait until PWR led starts flashing fast. Release the button then.
Also, try pinging used wired connection and also try 192.168.1.1.