Chromecast firmware versions

Here are the latest firmware version for Chromecast (1st gen), Chromecast, and Chromecast Audio devices.

Current Preview Program firmware version 

Chromecast (1st gen)  —  Firmware version 1.36.157768

Chromecast (2nd gen) — Firmware version 1.40.156414

Chromecast — Firmware version 1.40.156414

Chromecast Ultra — Firmware version 1.40.156414

Chromecast Audio — Firmware version 1.40.156414

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

Current production firmware version

Chromecast (1st gen)  —  Firmware version 1.36.157768

Chromecast (2nd gen) — Firmware version 1.40.156414

Chromecast — Firmware version 1.40.156414

Chromecast Ultra — Firmware version 1.40.156414

Chromecast Audio — Firmware version 1.40.156414

Cast for Android TV — Firmware version  1.36154871

How to check your firmware version

To check which firmware version you're on,

1. Make sure your phone or tablet is connected to same Wi-Fi network as your Chromecast device. 
2. Open the Google Home app .
3. In Home  tap the device you want to find the firmware version for. 
4. Tap Settings .
5. Scroll to the bottom and look for Cast firmware version: X.XXX.XXXXX.