ATTENTION:
GENERAL MANAGER

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PARTS MANAGER

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CLAIMS PERSONNEL

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IMPORTANT - All
Service Personnel
Should Read and
Initial in the boxes
provided, right.

SERVICE MANAGER

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© 2020 Subaru of America, Inc. All rights reserved.

SERVICE BULLETIN
APPLICABILITY:

2020-21MY Legacy and Outback Models

NUMBER: 15-261-20R

SUBJECT:

Reprogramming File Availability for Optimization
DATE: 03/10/20
of Gen 4 Denso CP1 Infotainment Systems
REVISED: 07/19/21

INTRODUCTION:
The following information announces reprogramming file availability and provides a software
update installation procedure to optimize the new Gen 4 Denso CP1 Audio and Navigation head
units utilized in the models listed above. As in previous models, the procedure will involve either
downloading the software update files from Subarunet or using those sent directly from Nuspire to
the SDS Notebook and transferring them onto a USB flash drive for head unit installation.
It is VERY IMPORTANT to read and understand this information completely before proceeding.
A time line chart along with a complete list of all the conditions addressed and enhancements
included in this and previous Denso software updates are provided in “Appendix B” and
“Appendix C” located at the end of this bulletin.
IMPORTANT NOTE: THERE ARE 4 (FOUR) FILES REQUIRED TO COMPLETE THIS
UPDATE FOR 2020MY LEGACY AND OUTBACK BUT ONLY 3 (THREE) ARE REQUIRED
FOR 2021MY LEGACY AND OUTBACK. ALL UPDATE FILES MUST BE DOWNLOADED
TOGETHER TO THE USB FLASH DRIVE BEFORE STARTING THE UPDATE. PERFORMING THIS UPDATE USING A USB FLASH DRIVE WITH ANY OF THE REQUIRED UPDATE
FILES MISSING WILL LEAD TO A NON-RECOVERABLE FAILURE OF THE COCKPIT
CONTROL MODULE (CCU) REQUIRING CCU REPLACEMENT.
11.6-Inch Display, Mid and High Level Units

NOTE: For HIGH (Navigation equipped) and MID level units,
see the WRH-20 Recall and WRI-20 Service Campaign Bulletin.

Materials Required:

Dual 7.0-Inch Display, Base Level Unit

Three (3) empty, USB 2.0 or 3.0 storage devices (flash drives) will be needed to perform the
update procedure. The devices should be dedicated to storing and transferring these updating files
only. They must be a minimum of 16GB or more in size and contain a NTFS file format before
downloading the update files onto them. Be sure to locate and re-format any existing USB drives
used for updating audio units. They must be fully cleared before adding these new update files to
them.
Continued...
Bulletin Number: 15-261-20R; Revised: 07/19/21

Page 1 of 22

IMPORTANT NOTES:
•

NEVER change the update file names after downloading them.

•

NEVER save any other files on the same flash drive.

There are various types of USB flash drives available from many suppliers. If the head unit does
NOT recognize the USB drive during the reprogramming process due to Controller IC type of USB
drive or compatibility with the head unit, confirm the flash drive format is NTFS. The flash drives
must be formatted for NTFS. If a recognition problem persists, use USB flash drives from another
manufacturer.
•

Kingston®:
DataTraveler G3 Series DataTraveler 100 G3 DT100G3
DataTraveler SE9 Series DataTraveler SE9 G2 3.0 DTSE9G2
Digital Data Traveler 3.0 USB Flash Drive - Violet DTIG4

•

SanDisk®:
Ultra Series SDCZ48-064G-J57
Cruzer Blade Series
Cruzer Glide Series CZ60 SDCZ60-064G-B35

•

Transcend®:
JetFlash 790 Series TS64GJF790KBE

•

PNY®:
Retract USB 3.0 Flash Drive, black (P-FD64GTRTC-GE)

•

Silicon Power®:
2 Pack USB 3.0/3.1 Gen1 USB Flash Drive Blaze B02

Continued...
Bulletin Number: 15-261-20R; Revised: 07/19/21

Page 2 of 22

SERVICE PROCEDURE / INFORMATION:
REMINDERS:
• Customer satisfaction and retention starts with performing quality repairs.
•

For HIGH (Navigation equipped) and MID level units, see the WRH-20 Recall and WRI-20
Service Campaign Bulletin.

STEP 1- VERY IMPORTANT: Before proceeding with the software updating procedure, the
currently installed software version ID MUST be confirmed by following the steps below:
1a) After starting the engine and system boot-up completes, from the HOME screen, touch the
Settings button.

1b) Press the General button. Use the down arrow to scroll to System Information then press to
display the System Information / Version information.

The examples below identify the head unit model and the last 6 digits signify the software version
number. Examples:
•

F11GHMxxx-xxx (High model software)

•

F11GMMxxx-xxx (Mid model software)

•

F11GBMxxx-xxx (Base model software)
Continued...

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Page 3 of 22

If on a 2020MY Legacy and Outback, the software version number (xxx-xxx) is 020-501, 020-502,
021-503 or 022-504, proceed to STEP 2 below. If the software version on a 2020MY Legacy or
Outback is 032-280 or higher, STOP as the unit already has the latest software version installed.
Proceed to the WARRANTY / CLAIM INFORMATION section of this TSB and process a Version
Check Only claim.
If on a 2021MY Legacy and Outback, the software version number (xxx-xxx) is 008-500, proceed to
STEP 2 below. If the software version is 030-880 or higher, STOP as the unit already has the latest
software version installed. Proceed to the WARRANTY / CLAIM INFORMATION section of the
TSB and process a Version Check Only claim.

STEP 2- Prepare the USB:
CAUTION: Do not use any USB flash drive which utilizes file organizing software or an operating
system.
VERY IMPORTANT: Before attempting to download any data files, confirm the PC and flash
drives being used are not infected with any virus. The flash drives MUST be formatted for NTFS.
•

Make sure the USB flash drive contains no other
files.

•

Right click on the corresponding “Removable
Disk”.

•

Select “Format”.

•

From the File System drop-down menu, select
“NTFS”

•

Check the “Quick Format” box (if not already
done).

•

Click on “Start” to format the USB flash drive.

STEP 3- Download the Update Files to the USB:
The files are available for download on Subarunet (see “A” below).
The applicable reprogramming files have also been sent directly to retailers by Nuspire in the same
way a Select Monitor Update would be pushed out. (see “B” below).
Follow “A” when using files downloaded from Subarunet.
Follow “B” when using the files sent directly to the SDS notebook from Nuspire.

Continued...
Bulletin Number: 15-261-20R; Revised: 07/19/21

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“A” When using update files downloaded from Subarunet:
Click Here to Access the Downloads for Audio/Navigation Information on Subarunet
A:

IMPORTANT: Files downloaded from Subarunet will be .zip files and must be unzipped before they
can be used. Using the normal audio / navigation system file update download procedure: Go to
Subarunet, select Service Operations and Technical>>Forms/Downloads>>Gen 4/Denso for Audio/
Navi then click on the applicable Hyperlink to download the file(s) to your SDS Notebook or PC:
Updates for Gen 4.0 Denso Audio and Navigation Head Units - 2020MY Legacy / Outback
(Recalls:WRH-20 and Campaign: WRI-20):
BASE-20-Legacy-Outback-Denso-CP1 AUDIO UPDATE-DECEMBER 2020
Updates for Gen 4.0 Denso Audio and Navigation Head Units - 2021MY Legacy / Outback
(Recalls:WRH-20 and Campaign: WRI-20):
BASE-21-Legacy-Outback-Denso-CP1 AUDIO UPDATE-DECEMBER 2020
•

Go to Downloads.

•

CAUTION: After download is complete, NEVER change the file or folder names.

•

Open / display the contents of File folder, for example:
“200916_RC2011_20MY_NA_Base_Update_PKG(F11GBM032-280).zip”

•

Click on “Extract All Files”.

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•

The screen below will appear to set a destination for the extracted file.

•

Double-click on the required file (for this example, select the file entitled “200916_
RC2011_20MY_NA_Base_Update_PKG(F11GBM032-280)”).

•

Copy all files then paste (or click / drag) it to the “clean” USB flash drive as listed
(Removable Disk) in the directory.

IMPORTANT NOTE: There are 4 (FOUR) FILES required to complete this update for 2020MY
Legacy and Outback but only 3 (THREE) ARE required for 2021MY Legacy and Outback. ALL
update files MUST BE DOWNLOADED TOGETHER to the USB Flash Drive before starting the
update. PERFORMING THIS UPDATE USING A USB FLASH DRIVE WITH ANY OF THE
REQUIRED UPDATE FILES MISSING WILL LEAD TO A NON-RECOVERABLE FAILURE OF
THE COCKPIT CONTROL MODULE (CCU) REQUIRING CCU REPLACEMENT.
Continued...
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•

To avoid confusion, use a permanent marker to label each flash drive with the file contents
(e.g. BASE Denso CP1, MID Denso CP1 or HIGH Denso CP1).

•

Go to Step 4.

“B” When using update files sent directly from Nuspire:
•

Go to My Documents on the GUI screen click on the folder “Denso CP1 Audio-Navi Update
Files” to display the list of available update files shown below.

•

CAUTION: After download is complete, NEVER change the file or folder names.

•

Double-click on the required folder (for this example, select the file entitled “BASE”) and the
update file will display as shown.

•

Select all files and either copy / paste or click / drag it to the USB flash drive.

•

Once all files have been loaded onto the USB flash drive, right click on the drive and select
“Eject”.

•

Remove the USB flash drive after the prompt appears that says “Safe to Remove Hardware”.

•

Mark the USB to indicate the head unit it will update (BASE Denso CP1 in this example).

•

Repeat the above steps to create the BASE or MID Denso CP1 and HIGH Denso CP1 USB
flash drives as needed using a separate USB drive for each update folder.

•

Proceed to STEP 4 below.

STEP 4- Perform the software update. REMINDER: This information is only applicable to BASE
trim models. For HIGH and MID trim models, see the WRH-20 Recall and WRI-20 Service Bulletin.

Continued...
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CAUTIONS:
•

Do not attempt to install the software immediately following an exchange installation.
Let the system restart first and operate for 20 minutes.

•

Do not attempt to install the software a second time for 30 minutes following prior
software installation.

•

Do not attempt to install the software for at least 30 minutes after completing a FOTA
update.

4a) Perform the update in a well ventilated location if updating with the engine running OR with
the ignition ON and a battery charger connected.
4b) PRESS and HOLD the RIGHT-side temperature control buttons (both up and down) and
press the Tune/Scroll knob 6 times then release all to display the Dealership Mode Menu.
Base

4c) Select Software Update from the Dealership Mode menu.
Base

Continued...
Bulletin Number: 15-261-20R; Revised: 07/19/21

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IMPORTANT NOTE: On a RARE occasion, the message “Software update setup is initializing…”
may be displayed. Should this occur, proceed to “Appendix A” starting on pg. 12 of this bulletin
for further instruction. For critical Service Bulletin helpful tips to prevent unnecessary hardware
replacement, follow the link to an important Subarunet message: https://www.subarunet.com/home/
home.html#/Announcement/83194.
4d) The screen below will be displayed.
Base

4e) Insert the H/U reprogramming USB into the USB port and press OK.
NOTE: If after plugging in the USB, the screen displays a Software Loading Unsuccessful
message, confirm the USB device has been properly formatted and the the software on the device
matches the H/U being reprogrammed (example: Base software is being used to update a Base H/U).
Base

NG

OK

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4f) The screen below will be displayed. Press OK to start the software update.
NOTE: The actual software version displayed will be different from the picture shown below.
Base
Please refer to
the following
table.

Software Version Table
Version Table
20MY

Version Table
21MY

Current Version

Current Version

Model

MSOC Version

Model

MSOC Version

Base

F11GBM020-501 or F11GBM020-502 or
F11GBM021-503 or F11GBM022-504

Base

F31BHM008-500
Available Version

Available Version
Model

MSOC Version

Base

F11GBM032-280

Model

MSOC Version

Base

F31BBM030-880

4g) Once the update begins, the screen below will be displayed with a progress bar. It takes about 15
to 20 minutes for the update to complete.
VERY IMPORTANT: NEVER turn off the ignition while the software update is in process.
Base

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4h) When the software update is complete, the following screen will be displayed (the actual
software version will be different).
Base

Press “OK”

IMPORTANT NOTE:
On a rare occasions a “Software Update Incomplete” message may appear in this step which occurs due
to a bug in the software update procedure. Proceed to Step 4i below to confirm the software version
has been updated to the latest version.
For critical Service Bulletin helpful tips to prevent unnecessary hardware replacement, follow
the link to an important Subarunet message: https://www.subarunet.com/home/home.html#/
Announcement/83194.
4i) Select OK in the screen above then remove the H/U reprogramming USB from the USB port.
4j) Turn the Ignition OFF, open the driver’s door then close the driver’s door.