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Chromecast and Google TV Streamer firmware versions and release notes

Last updated: October 21, 2024

Here are the latest firmware versions and release notes for Chromecast and Google TV Streamer devices. You'll also find the steps on how to check the current firmware version and update the Google streaming devices.

Firmware updates are done in stages. The production firmware versions listed are updated once the version is available to all devices.

Release notes

Current Preview Program firmware version

Device Firmware version What's included in the update
Chromecast (2nd gen) 1.56.275994 Bug fixes and improvements
Chromecast (3rd gen) 1.56. 291998 Bug fixes and improvements
Chromecast Ultra 1.56.281627 Bug fixes and improvements
Chromecast Audio 1.56.281627 Bug fixes and improvements
Cast for Android TV 1.56.292394 Bug fixes and improvements

Want to test drive the latest firmware version before it's released broadly? Join the Chromecast Preview Program.

Current production firmware version

Device Firmware version What's included in the update
Chromecast (1st gen) 1.36.159268

Bug fixes and improvements

Note: Support for Chromecast (1st gen) has ended, which means it no longer receives software or security updates, and Google doesn't provide technical support. Users may notice a degradation in performance.

Chromecast (2nd gen) 1.56.275994 Bug fixes and improvements
Chromecast (3rd gen) 1.56.291998 Bug fixes and improvements
Chromecast Ultra 1.56.281627 Bug fixes and improvements
Chromecast Audio 1.56.281627 Bug fixes and improvements
Cast for Android TV 1.56.292394 Bug fixes and improvements

Chromecast with Google TV (4K)

Build number:

STTL.240812.006

  • Android security patch level has been updated to September 2024. Go to the Chromecast Security Bulletin for more information.
  • Other bug fixes and performance improvements
To manually download the latest update, follow the instructions here.
Chromecast with Google TV (HD)

Build number:
STTL.240812.006

  • Android security patch level has been updated to September 2024. Go to the Chromecast Security Bulletin for more information.
  • Other bug fixes and performance improvements
To manually download the latest update, follow the instructions here.
Google TV Streamer (4K) Build number:
UTT3.240625.001.K5

Check the firmware version of your streaming device

  1. Open the Google Home app Google Home app.
  2. Tap and hold your device's tile.
  3. Tap Settings  and then Device information.
  4. Under "Technical information," check for Cast firmware: "X.XXX.XXXXX." If the device is on Fuchsia, check for System firmware version: "X.XXXXXXXX.X.XXXXXXX."

Download the latest system update for your streaming device

Your device will usually download updates automatically. To manually download the latest update, follow these steps:

  1. Go to the home screen of your streaming device.
  2. Choose All settings and then System and then About and then System update.

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