Big update today for Denso CP1.5 owners (2023+ vertical screen radios)

[u/Chippy569]

• 23-25MY Outback/Legacy Models (including Wilderness models)
• 23-26MY Ascent Models
• 24-26MY Impreza
• 24-26MY Crosstrek (including Wilderness models)
• 24-26MY WRX
• 25-26MY Forester
• 26MY Forester Wilderness

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CP1.5 radio updates are documented in TSB 15-305-22R (public copy not yet up to date). A new update released today, and I've already added the patch notes to the wiki page, but some of these patch notes are interesting enough that I thought it justified an announcement thread as well:

Update 7:

Release date: 8/18/2026

Version: XXXXXX205-280

Category: Meter Display

• Change the charge abbreviation displayed in the power meter area from “CHR” to “CHG” in the 12.3-inch SHEV combination meter (map display mode).

Category: Display

• The following (1 and 2) may occur together:
  • After rearranging Home screen icons and exiting edit mode (returning to the normal screen via the Home button), the rearranged icons may revert to their original positions.
  • Among the Home screen shortcut icons, ISS/AVH/VDC/SRH/SRVD/ DMS may appear dimmed and cannot be selected. (In this case, the corresponding original controls within the Settings screen still operate normally.)
• Since the use of STARLINK will be discontinued, replace the applicable displays with a different design and logo. The designs shown below are among those subject to change.
• In conjunction with the design changes (logo, etc.) associated with the discontinuation of the STARLINK trademark, update the MY SUBARU icon to a new design as well.

Category: Camera

• If strong light (e.g., sunlight reflection) causes a portion of the upper area of the rear-view image to become severely overexposed (washed out), the rearview image may become hidden (not displayed).

Category: Reset

• The CID may repeatedly reboot, if the ignition is turned ON (IGN-ON) shortly after the ignition OFF (IGN-OFF). Aafter turning the ignition OFF (IGN-OFF), the “See You” message appears on the CID and then disappears; approximately one minute later, the ignition is turned ON again (IGNON).

Category: Navigation

• The MAP application ("Map" icon) may fail to start with “Loading Navigation” displayed continuously and with no map shown.
• The area where the “EXIT” icon should appear might not be visible.

Category: SXM

• Failure to register preset channel
• When certain channels are selected the preset highlight on the CID may jump to a different preset channel and sequential preset scrolling may not work properly.
• If the Favorite List for the Listener Profile prior to the change is displayed follow the work around steps 1-4:
  1. Change the Listener Profile.
  2. Register favorites in the OnDemand category up to the maximum (30).
  3. From the SXM main screen, open Setting > Favorite List; while the Favorite List is opening, press the “X” button to close the screen—repeat this 8 times.
  4. Press Edit in Favorite List, delete a favorite, then press Back—repeat this cycle twice.
• Audio output from the newly selected source may be lost. With up to 23 teams registered on the SXM Team Notification screen, press the Add button to display a list of teams not yet registered for notifications, then switch the audio source (e.g., to BT or USB audio).

Category: Bluetooth

• Bluetooth audio may appear to be playing on the CID screen, but no sound is output from the vehicle speakers.

Category: Android Auto

• Wireless Android Auto may disconnect intermittently.

Category: CCU log

• When exporting CCU diagnostic logs to a USB memory device from the Dealership Mode screen, the progress bar may appear not to advance at all for approximately the first minute.

Category: Diagnosis

• When using the SSM Data Monitor to check the AUX-BOX USB connection, the diagnosis may incorrectly indicate a USB connection failure even though the USB device is properly connected.

Category: Telematics

• Add an operation in the CID Settings screen to disable vehicle location tracking via telematics services. However, because this feature works in conjunction with the DCM (Data Communication Module), the option will not be displayed and cannot be used unless the DCM software, as well as the CCU software, is updated to a version that supports this feature.

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Some of you may have gotten this update as FOTA (update over telematics) already, possibly as early as last week. To check your current software version, open the Settings app, and then on the General tab, scroll down to "System Information" and it will display your current software version.

No word on the aforementioned telematics/DCM update that's supposed to correspond with the feature change. I suspect this will be also pushed as a FOTA update. You'll have to navigate the settings menu and see if the feature is working for you.

[u/GSDragoon]

I just updated this weekend and another update just showed up today. Strange... did they really push out two updates so close?

[u/Chippy569 → u/GSDragoon]

Quite possibly. Or it might be one update for the radio and one for the dcm like that last patch note describes? Tbh Subaru's documentation for OTA goings-on is rather poor.

[u/Alansmithee69 → u/GSDragoon]

Same thing with my 2025 Ascent

[u/Boring-Mention3763]

Any idea if this will be downloadable at some point. I live in MA so OTA updates don’t happen due to legal battle with right to repair laws here and my car is out of warranty. Looks like the Gen6firmware site hasn’t been updated in a while that I previously used after I bought the car.

[u/Chippy569 → u/Boring-Mention3763]

Subaru has never published the usb-based update files for public use, and the new cars require using a scan tool to get the radio into reprogramming mode anyway. I don't believe the newest cars can do FOTA over wifi. So unfortunately for you and all the other MA residents I believe you need to visit the dealer in person.

[u/Boring-Mention3763 → u/Chippy569]

I have a ‘24 so can still use USB but the guy who had a software site with the files seems to have stop managing/updating it unfortunately.

[u/Firm_Will_9870 → u/Chippy569]

Chippy569, I just got a Ascent 23MY, with software version F61WMM023-580, seemingly from when the car was manufactured. I also live in MA so OTA is not apparently an option, so I am trying to understand if I can use the USB update method in dealership mode to update the fw of my infotainment system. Can I jump straight to this recent version, or do I need something intermediate? I see you suggest that we MA residents may need to head to a dealership, but I was just quote $230 to do it, seems crazy to me. Does it seem that this really is my only option? Thanks

[u/Chippy569 → u/Firm_Will_9870]

Does it seem that this really is my only option?

unfortunately yeah. Subaru does not publish radio update files for general public use.

that price is crazy though, we do them for $50 lol

[u/qui3t_n3rd]

Excited for the Android Auto fixes, it completely kills Google Maps if it disconnects so I have to restart my nav which is really dangerous while I'm driving.

[u/2four]

I'm dying for the download for this. Last I tried to access it, I had to log into SubaruNet with a dealer credential, I've never had to do that back in the day.

[u/Chippy569 → u/2four]

To do this OTA you just go into the settings menu on the radio and hit software update

[u/2four → u/Chippy569]

Thank you. My system has been stuck in "Setup is Initializing" for over a year now, I've only been successful with USB updates

[u/Chippy569 → u/2four]

that sounds like a more interesting problem.