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100 Corporate Drive Mahwah, NJ 07430

Service Bulletin
No. : OST-F1577
Date: September 28, 2009
_____________________________________________________________

Model: AVR-5308CI (pay upgraded), AVR-5308ACI

Subject: Correction of the Firmware via DPMS (Denon Product Management
Server).
Countermeasure is applicable only upon claim from the customer.

Symptom: 1) The output signal might be interrupted when customer selects
the input selector at OPT digital input.
2) When playing a "DTS96/24" track from a specific DVD-Audio disc, the output
signal might be interrupted.
3) When the unit turns from "CEC stand-by" to "ON", the output signal might be
changing to "2ch PCM".

Solution: We corrected the firmware so that no malfunction occurs.
METHOD OF UPDATE via DPMS
Read me first! Please initialize the unit before updating the firmware if you have
never updated the firmware of the unit via "DPMS". When you already updated
the firmware of the unit via "DPMS", it is not necessary to initialize the unit again.

Updating the firmware (Refer to the Instruction Manual.)
1) Turn the Power Supply of the unit off.
2) Connect the Ethernet terminal of the unit to the Network line by Ethernet
straight cable. (Don't use Ethernet cross cable.)
3) The connection of the network recommends the Ethernet cable for certain
update.
4) Turn the Power Supply of the unit on.
5) The unit sets the Internet. Wait for about two minutes until customer's router
ends the set up.
______________________________________________________________________________________
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.
Caution: The update doesn't succeed when the customer's set cannot connect to
the Internet correctly. In this case, please confirm the internet environment in the
customer's house. Whether the set is able to receive Internet radio correctly or
not can be used to determine whether the Internet is properly connected. There
are some problems under the internet environment when the Internet radio can
not be received.

6) Press "MENU" button on the front panel and indicates the GUI menu.
7) Press "CURSOR" button.
8) The GUI indicates, "MANUAL SETUP" > "OPTION SETUP" > "Firmware
Update".

Caution: The update interrupts when it is not possible to connect it with the
Internet correctly. In this case, please do from 1) again.

9) Select "Start" on GUI.

______________________________________________________________________________________
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.
10) Press the "ENTER" button.
11) The firmware will start updating.

Caution: when the firmware update starts correctly, the GUI and the audio
signal, etc. everything stops, and becomes the update operation.

12) The GUI display disappears, and becomes only FL display.

13) During the updating, the FL Display indicates the procedure of update the
firmware.
Time necessary for update of AVR-5308CI: approximately 4 min.
Time necessary for update of AVR-5308ACI: approximately 14 min.

Caution: The update time might change depending on the situation of the DPMS
server and the speed of the Internet environment of the customer house.

______________________________________________________________________________________
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.
14) After upgrading, the FL Display indicates below.

15) The unit initializes automatically.

When the unit already updated the latest firmware, the FL Display indicates
following indication.

______________________________________________________________________________________
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.
Troubleshooting: If the display reads as shown below, check the settings and
network environment, then update again. The problem is not in the Internet
connection if the Internet radio can be able to be received correctly

Cautions during the updating operation:
1) Do not turn off the "DHCP" setting when you update the unit. (Initialization is
turning on.) Please execute it under the guidance of the IT staff with computer
skills when the setting of "DHCP" is unavoidably turned off by limiting the
electronic environment, and you set IP Address, the subnet mask, the default
gateway, and DNS, etc. for yourself. When a mistake is made in the setting with
"DHCP" turned off, the unit might not operate, and in the worst situation the unit

______________________________________________________________________________________
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.
can be damaged. Please do not touch the setting of "DHCP" except in special
circumstances.
2) When the customer uses "Netgear router 614 Series" for updating,
deactivate "uPnP" in the router.
3) Do not turn off the Power of the unit during the updating operation.
4) If the Display has a fixed indication during the updating operation, wait longer
than total updating time. Then, turn off the Power of the unit and start the
updating operation from the beginning again.
5) The unit won't break down while updating it when the power supply of the unit
is turned off or the cable of the Internet is pulled out.
6) Please turn off and turn on the power supply when the unit becomes unstable.
7) Please execute initialization when it is not improved. Repair by service when it
is not improved.

Confirming the firmware numbers after upgrading:
After completion of the updating operation, the new version number can be
confirmed by starting up the A/V Receiver according to the following procedure.
With the following operation, the A/V Receiver can be set to the Flash-ROM
Version-Number Confirmation Mode. Turn the power of the A/V Receiver on,
while holding both "STATUS" button and "DIMMER" button on the front panel
simultaneously.

Every time the "STATUS" Button is pressed, version numbers of the MAIN, SUB,
etc. are indicated on the front panel section in the following order.

______________________________________________________________________________________
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.
Serial Number Range:
Please apply the above modification to the production models in the following
serial numbers. (Last 5-digit)

PAY-Upgraded AVR-5308CI All models
AVR-5308ACI 50001 ~ 50675

______________________________________________________________________________________
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.