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Chromecast and Google TV Streamer firmware versions and release notes

Last updated: February 24, 2025

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.

Important: 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

Current production firmware version

Check the firmware version of your streaming device

Download the latest system update for your streaming device

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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

Device	Firmware version	What's included in the update
Chromecast (1st gen)	1.36.159268	Important: Support for Chromecast (1st gen) has ended. It no longer receives software or security updates, and Google doesn't provide technical support. Users may notice a degradation in performance. Bug fixes and improvements
Chromecast (2nd gen)	1.56.467165	Bug fixes
Chromecast (3rd gen)	1.56.291998	Bug fixes and improvements
Chromecast Ultra	1.56.281627	Bug fixes and improvements
Chromecast Audio	1.56.467166	Bug fixes
Cast for Android TV	1.56.292394	Bug fixes and improvements
Chromecast with Google TV (4K)	Build number: STTL.241013.003	Android security patch level has been updated to November 2024. For more information, refer to Chromecast Security Bulletin. Other bug fixes and performance improvements. Learn how to manually download the latest update.
Chromecast with Google TV (HD)	Build number: STTL.241013.003	Android security patch level has been updated to November 2024. For more information, refer to Chromecast Security Bulletin. Other bug fixes and performance improvements. Learn how to manually download the latest update.
Google TV Streamer (4K)	Build number: UTTK.241210.003	Security Patch Updates to January 2025 Bug fixes and improvements Learn how to manually download the latest update.