Chromecast updates itself automatically most of the time
Your Chromecast device checks for firmware updates automatically and installs them in the background when you are not actively using it. You do not need to do anything — the device handles this on its own as long as it stays plugged in and connected to your Wi-Fi network. Most updates happen overnight or during idle periods, so you may not even notice they occurred.
If you want to check whether your device is running the latest version or force an update to happen sooner, you can do that through the Google Home app. The process takes just a few minutes and gives you visibility into what version your Chromecast is running.
Key Takeaways
- Chromecast updates happen automatically in the background when the device is plugged in and connected to Wi-Fi, so manual updates are rarely necessary.
- You can check your current firmware version and manually trigger an update through the Google Home app on your phone or tablet.
- Keep your Chromecast plugged in and on the same Wi-Fi network as your phone to may support updates read and install properly.
- If an update fails or stalls, unplugging the device for 30 seconds and plugging it back in usually resolves the problem.
How to check your firmware version in the Google Home app
Open the Google Home app on your phone or tablet and look for your Chromecast device in the list of connected devices. Tap on the device to open its details page. At the bottom of the screen, you will see a section labeled "Device info" or "About" — tap that to view the current firmware version number.
The version number appears as a string of digits, such as "1.54.234567". If you want to know whether this is the latest available version, you can search for your specific Chromecast model and version number online, or straightforward proceed to the next step to check for updates directly.
Manually triggering a firmware update
In the Google Home app, open your Chromecast device details the same way you did to check the version. Look for a settings icon (usually three dots or a gear symbol) in the top right corner of the device card and tap it. Scroll down until you find an option labeled "System" or "Device settings."
Inside System settings, look for "About device" or "Firmware information." If an update is available, you will see a button or option to update now. Tap it to begin the read and installation. The process typically takes 5 to 15 minutes, and your Chromecast will restart automatically when it finishes. Do not unplug the device during this time.
What to do if the update seems stuck
Sometimes an update will stall or appear to hang. If the update screen has not changed for more than 20 minutes, unplug your Chromecast from power, wait 30 seconds, and plug it back in. This forces a restart and usually clears whatever caused the delay.
After the restart, check the Google Home app again to see whether the update completed. If the firmware version has changed, the update was successful. If it shows the same version as before, try the update process again. If it fails a second time, make sure your Wi-Fi signal is strong where the Chromecast is located — weak signal can interrupt downloads.
Ensuring your Chromecast stays up to date automatically
The best way to keep your device current is to leave it plugged in at all times and keep it connected to a stable Wi-Fi network. Chromecast checks for updates every few days and installs them when the device is idle. If you unplug your Chromecast frequently or move it between networks often, automatic updates may not happen as regularly.
If you use your Chromecast daily, updates may take longer to install because the device waits for a period when you are not actively casting. Plugging it in a few hours before bedtime gives the system a window to read and install updates overnight without interrupting your use.
Why firmware updates matter
Firmware updates patch security vulnerabilities, fix bugs that cause casting to drop or audio to sync poorly, and add new features. Keeping your Chromecast current ensures it works reliably with newer phones and apps, and protects your home network from potential security risks.
Updates are usually small and install quickly, but occasionally Google releases larger updates that take longer. These major updates may add visible features or change how the device behaves, so it is worth checking your version number after a major update to see what changed.
Frequently Asked Questions
Can I use my Chromecast while it is updating?
No — the device will not respond to casting requests during an update. The update typically takes 5 to 15 minutes. Plan updates for a time when you are not actively using the device, or let it update automatically overnight when you are not casting.
What if my Chromecast loses power during an update?
If the device loses power mid-update, it may fail to complete the installation. Plug it back in and check the Google Home app to see the current firmware version. If the version did not change, try the update again. Chromecast is designed to recover from power loss during updates, but a failed update may require a factory reset in rare cases.
Do I need to update my Chromecast if it is working fine?
Updates are not urgent if your device is working well, but installing them when they become available protects your network and ensures compatibility with new apps and phones. Since updates happen automatically, there is no reason to avoid them.
Why does my Chromecast keep asking me to update?
If you see repeated update prompts, the previous update may have failed to install completely. Try the manual update process again, making sure the device stays plugged in and connected to Wi-Fi throughout. If it fails again, restart the device by unplugging it for 30 seconds.
Can I roll back to an older firmware version?
Google does not provide a way to downgrade Chromecast firmware to an older version. Updates are one-way only. If an update causes problems, contact Google support or try a factory reset, which will reinstall the current firmware cleanly.