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
| 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 |
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 |
|
| Chromecast with Google TV (HD) |
Build number:
STTL.241013.003 |
|
| Google TV Streamer (4K) |
Build number:
UTTK.241210.003 |
|
Download the latest system update for your streaming device
Your device usually downloads updates automatically. To manually download the latest update, follow these steps:
-
Go to the home screen of your streaming device.
-
Choose All settings 
System About System update.
.
Device information.