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:

2022-24MY BRZ Models

NUMBER: 15-297-22R

SUBJECT:

Reprogramming File Availability for Optimization
DATE: 07/01/22
of Gen 4 Denso CP1 Infotainment Systems
REVISED: 10/02/24

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.
CAUTION: VEHICLE SERVICE PERFORMED BY UNTRAINED PERSONAL COULD RESULT
IN THE EQUIPMENT DAMAGE OR EVEN SERIOUS INJURY.
Service Bulletin is intended for use by trained technicians ONLY. It informs technicians of
conditions, which may occur in some vehicles or provides information, which could assist with
proper servicing of the vehicle. Properly trained technicians have the equipment, tools, safety
instructions, and know-how to do the job correctly and safely.
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 D” and
“Appendix E” located at the end of this bulletin.
IMPORTANT NOTE: The update contains 2 folders and 1 file. When performing an update,
the USB must contain the matching number of folders and files and all files must be replaced.
ALWAYS use the latest files together as a set.
NEVER reuse or combine files from a prior update with a newer version.

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Bulletin Number: 15-297-21R; Revised: 10/02/24

Page 1 of 41

PART INFORMATION:

Materials Required:
An empty, USB 2.0 or 3.0 storage device (flash drive) will be needed to perform the update
procedure. The device should be dedicated to storing and transferring these updating files only. It
must be a minimum of 8GB or more in size and contain a NTFS file format before downloading the
update files onto it. 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.
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 drive 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, please clear the drive and format for FAT32 instead of NTFS. If
a recognition problem persists, use a USB flash drive 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

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•

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

IMPORTANT NOTE: The update contains 2 folders and 1 file. When performing an update,
the USB must contain the matching number of folders and files and all files must be replaced.
ALWAYS use the latest files together as a set.
NEVER reuse or combine files from a prior update with a newer version.
SERVICE PROCEDURE / INFORMATION:
REMINDER: Customer satisfaction and retention starts with performing quality repairs.
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.

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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:
•

F41CMMxxx-xxx or FG1CMMxxx-xxx
MY

22MY

23-24MY

Carline

BRZ

BRZ

Trim/Grade

Installed Software Versions

Available Software Version

MID

121-770
121-870
122-080
132-180
142-280
141-770
141-870
142-170

152-380

MID

120-580
130-680
140-570
140-670
140-780
142-280

150-880

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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 drive
being used is not infected with any virus. The flash drive 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.
“A” When using update files downloaded from Subarunet:
A

Click Here to Access the Downloads
for Audio/Navigation
Information on Subarunet

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 - 2022-24MY BRZ:
MID-22-24-BRZ-Denso-CP1 AUDIO UPDATE-April 2024

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•

Go to Downloads.

•

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

•

Open / display the contents of File folder, for example: “File name TBD”.

•

Click on “Extract All Files”.

•

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

•

Double-click on the required folder (for this example, used folder titled “Version11(RC2208)_
Fx1CMM13x-x8x”).

•

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

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IMPORTANT NOTE: The update contains 2 folders and 1 file. When performing an update,
the USB must contain the matching number of folders and files and all files must be replaced.
ALWAYS use the latest files together as a set.
NEVER reuse or combine files from a prior update with a newer version.
•
•

To avoid confusion, use a permanent marker to label the flash drive with the file contents (e.g.
22MY BRZ 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.
IMPORTANT: Always confirm the folder is there as shown below, “BRZ 2022”. If not, the
SDS notebook hasn’t been updated with the latest release. Please contact Nuspire to request
they resend the update.”

•

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 3 files and either copy / paste or click / drag them to the USB flash drive.

IMPORTANT NOTE: The update contains 2 folders and 1 file. When performing an update,
the USB must contain the matching number of folders and files and all files must be replaced.
ALWAYS use the latest files together as a set.
NEVER reuse or combine files from a prior update with a newer version.
•

Once all files have been loaded onto the USB flash drive, right click on the drive and select
“Eject”.
CAUTION: NEVER change the file names.

•

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 (22MY BRZ Denso CP1 in this
example).

•

Proceed to STEP 4 below.

Bulletin Number: 15-297-21R; Revised: 10/02/24

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STEP 4- Perform the software update.
CAUTIONS:

•

NEVER attempt to install the software immediately following an exchange module
installation.
Let the system restart first and operate for 20 minutes.

•

NEVER attempt to install the software a second time for 30 minutes following a
previously unsuccessful software installation.

•

NEVER attempt to install the software for at least 30 minutes after completing a
FOTA update.

Best practice is to prevent USB software update conflicts with FOTA software update. Please
confirm “Automatically Check for Update” setting is turned off following the steps below, prior
to starting the software update via USB.

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.

Check Software Version Before Update
4b) How to check the software version. Push the TUNE knob six times while simultaneously
pressing down on both sides of the SEEK switch to display the Dealership Mode Menu.

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4c) Select System Update from the Dealership Mode Menu

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. 15 of
this bulletin for further instruction.
4d) The screen below will be displayed.

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4e) Insert 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 system being reprogrammed and retry.

If you get the message Software Update Incomplete as shown below, please don’t replace the
hardware but retry updating the software according to the instructions in “Appendix B ” on pg.
16.
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.

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Software Version Table

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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.

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

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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.
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.
4k) Wait for 3 minutes, then turn the ignition ON.
4l) Access Dealership Mode following steps provided item 4b and using the tables below, confirm
the software update completed successfully.
NOTE: The new Software Version number must be entered when prompted at claim entry
Software Version Table

4m) Enable the setting “Automatically Check for Updates” as shown in the steps below.

4n) Turn the ignition OFF, open the driver’s door then close the driver’s door to complete the
procedure.
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WARRANTY / CLAIM INFORMATION:
For vehicles within the Basic New Car Limited Warranty period or covered by an active Subaru
Added Security Gold plan, this repair may be submitted using the following claim information:
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Subaru of America, Inc. is
ISO 14001 Compliant
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.

Labor Description

Labor
Operation #

Labor
Time

Fail Codes

DENSO CP1 SOFTWARE UPDATE-INCLUDES VERSION CHECK

A832-386

0.5

ZTZ-48

REMINDER: The new Software Version number must be entered when prompted at claim entry.
NOTE: Retailers are now permitted to claim up to $5.00 per claim in Sublet to help offset the cost
of replacement USB drives. Repeated re-formatting of the USB drives used for reprogramming
can compromise their ability to operate properly. Over time, hardware connections can loosen and
stored data files can become corrupted. Retailers are responsible for replacing any worn or otherwise
inoperable USB drives as needed. This compensation is intended to help defray those costs.

IMPORTANT REMINDERS:
•

SOA strongly discourages the printing and/or local storage of service information as
previously released information and electronic publications may be updated at any time.

•

Always check for any open recalls or campaigns anytime a vehicle is in for servicing.

•

Always refer to STIS for the latest service information before performing any repair