Sony WX-920BT Manual De Instrucciones página 29

For firmware update operation:
FILE ERROR: The updater is not stored in the USB
device.
 Store the updater in the USB device, then try
again (page 20).
UPDATE ERROR PRESS ENTER: Firmware update is
not completed properly.
 Press ENTER to clear the message, then try again.
During the update, do not turn the ignition to the
OFF position, nor remove the USB device
(page 20).
If these solutions do not help improve the situation,
consult your nearest Sony dealer.
If you take the unit to be repaired because of CD
playback trouble, bring the disc that was used at
the time the problem began.
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