# Over\-the\-air update N25\-249646

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Over\-the\-air update
- NHTSA id: 11016122
- Published by NHTSA: 2025\-04\-01
- Manufacturer's number: N25\-249646
- Manufacturer's date: 2025\-04\-01
- Campaign id or software version: N25\-249646
- NHTSA component: UNKNOWN OR OTHER
- Manufacturer's system: VCU: Vehicle Communication Unit

## NHTSA's summary

Your vehicle keeps getting better. This software update includes the following, if your vehicle is equipped: • Enables Dolby Atmos advanced surround sound technology to provide optimal, immersive audio experience. • Introduces Atmos object\-based audio to allow sound to be placed throughout the vehicle. • Utilizes height channels to allow sound to move in a three\-dimensional space with Atmos. • Active OnStar Services plan or data plan required. • Amazon Music Unlimited and Tidal currently available for use with Atmos. • Compatible streaming services that default to the highest quality track supported will utilize Atmos. • Atmos content in .mp4 format can be played from USB storage devices. During the update process, your radio may stay on up to 5 minutes after you exit the vehicle. This is expected behavior when an update package is onboard the vehicle. Do not service your vehicle during installation.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016122-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2025/MC-11016122-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Vehicles listed

- 2025 CADILLAC OPTIQ

JSON: [/v1/bulletins/11016122](/v1/bulletins/11016122)

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