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100 Corporate Drive Mahwah, NJ 07430

Service Bulletin
No. : OST-F1269-1
Date: February 21, 2008
_____________________________________________________________

Model: DVD-2500BTCI

Subject: Correction of the Firmware.

Symptom: 1) When "AAC 5.1ch" signal plays back, "VFD" of the amplifier
indicates "AAC 7.1ch". However, the output signal is 2ch.
2) When Blu-ray Disc that recoded AAC signal plays back, it does not output "Bit
stream signal" on HDMI.

Solution: The firmware has been corrected so that no malfunction occurs.
MODIFICATION: Please record each program file on a blank CD-R separately,
and update the unit upon repair of the unit.

Note: Upon recording the Disc:
1) When recording the supplied file on the blank CD-R, the format shall be
"ISO9660" and the session shall be "CLOSE".
2) When recording the supplied file on the disc, please use the lowest recording
speed that is available on your PC. If the file is recorded at a higher speed, the
rewriting operation may fail due to improperly recorded data on the disc.

1) Rewriting procedures of the FE/BE ROMs.
(1) Turn the Power Supply of the unit on. Press the "OPEN/CLOSE" button and
open the Disc Tray.
(2) Put the recorded CD-R for rewriting the FE/BE on the Disc Tray and press
the "OPEN/CLOSE" button.
(3) The Disc Tray closes, the FL Display indicates "F/W-UP" and the update of
the firmware starts automatically.

______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.
(4) After indicating the "Ver:1013" on the FL Display, the Disc Tray opens
automatically.
(5) Take out the Disc from the Disc Tray.
(6) Do not turn off the Power Supply of the unit!
(7) The FL Display indicates from "0%" to "100%".
(8) The FL Display indicates "100%", and then indicates "9C1C" of checksum.
(9) The new firmware is installed completely.
(10) Press the "OPEN/CLOSE" button and close the Disc Tray.
(11) Pull out AC cable from the AC Strip.

2) Confirmation of the version:
(1) Press the "OPEN/CLOSE" button and close the Disc Tray.
(2) Please confirm! "NO DISC" on the FL Display.
(3) Press the buttons on the remote control in the order of "1", "2", "3", "4" and
"DISPLAY".
(4) The following firmware versions appear on the GUI.
Model Name E5E01UD
Version 1.013
Region A-1

Cautions during the rewriting operation:
1) Please do not turn the units Power off during the rewriting operation.
2) If the Display isn't turning into "9C1C" during the rewriting operation, wait
longer than 10 minutes after closing the Disc Tray. Then, turn the Power off and
start the rewriting operation from the beginning again.

Parts:

Ref# Description Part Number
NA Firmware update E5E01UD1013DA1.bin