Chromecast updates automatically, but you can check the status yourself

Chromecast firmware updates happen in the background without any action from you. Google pushes updates to your device when it is connected to power and Wi-Fi, usually overnight. You cannot manually trigger an update, but you can verify that your device is running the current version and see when the last update occurred.

The update process is automatic because Chromecast has no buttons, no screen menu, and no way to pause or schedule updates. Once your device is plugged in and connected to your home network, it checks for updates regularly. If a new version is available, it downloads and installs automatically. The device may restart during this process, which is normal.

If your Chromecast is not updating, the problem is usually a network connection issue or a power supply that is not stable enough. Addressing those two things will resolve most update delays.

Key Takeaways

  • Chromecast firmware updates automatically when the device is plugged in and connected to Wi-Fi; you cannot manually force an update.
  • Check your current firmware version in the Google Home app by selecting your device, tapping the settings icon, and looking under "Device information."
  • If your device has not updated in several weeks, restart it by unplugging it for 30 seconds, then plugging it back in.
  • Updates require a stable power connection and a reliable Wi-Fi signal; moving your device closer to your router or using a different power outlet can help.

How to check your current firmware version

Open the Google Home app on your phone or tablet. Tap the device icon for your Chromecast in the top left corner, then select your Chromecast from the list of devices. Tap the settings icon (a gear) in the top right corner of the device card.

Scroll down to the "Device information" section. You will see the firmware version listed there, along with the date it was last updated. Write down the version number if you want to compare it later or report it to Google support.

If you do not see a firmware version listed, or if the app shows an error, try closing the Google Home app completely and opening it again. Sometimes the app needs to refresh to display the current information.

Why your Chromecast might not be updating

The most common reason a Chromecast does not update is that it loses power or Wi-Fi connection during the update window. Chromecast checks for updates most often between midnight and 6 a.m., when most people are not actively using their devices. If your device is unplugged, turned off, or disconnected from Wi-Fi during that time, the update will not happen.

A weak Wi-Fi signal can also prevent updates. Chromecast needs a stable connection to read the firmware file, which can be 50 to 100 megabytes in size. If your device is far from your router or in an area with interference from other electronics, the read may fail silently. The device will try again the next night, but if the signal stays weak, updates can be delayed for weeks.

Power supply problems are less common but still possible. If you are using a low-quality USB power adapter or a USB port on a TV that does not provide enough current, your Chromecast may not have enough power to complete the update. Using the power adapter that came with your device, or a certified USB-C adapter rated for at least 2 amps, will solve this.

Steps to take if your device has not updated recently

First, restart your Chromecast. Unplug it from power for 30 seconds, then plug it back in. Wait for the device to boot up — you will see the Chromecast logo appear on your TV screen. This straightforward restart often triggers the update check when ready.

Second, move your Chromecast closer to your Wi-Fi router if possible. Even a few feet can make a difference in signal strength. If your router is in another room, try placing your Chromecast on a shelf or table with a clear line of sight to the router.

Third, check that your Chromecast is plugged into a power outlet directly, not into a USB port on your TV or a power strip that might be turned off. Use the power adapter that came with your device. Leave it plugged in overnight so it has time to read and install the update.

If you have taken these steps and your device still shows an old firmware version after a week, restart your Wi-Fi router as well. Unplug your router for 30 seconds, plug it back in, and wait for it to fully restart. Then leave your Chromecast plugged in overnight again.

What happens during a firmware update

When your Chromecast downloads and installs a new firmware version, the device will restart. This usually takes two to five minutes. During the restart, your TV screen may go black or show the Chromecast logo. Do not unplug the device during this time.

After the restart completes, your Chromecast will reconnect to your Wi-Fi automatically. You should be able to cast to it again within a few minutes. If it does not reconnect, restart your phone or tablet's Wi-Fi and try casting again.

Updates do not erase any of your settings or preferences. Your device will still be connected to the same Wi-Fi network and Google account after the update finishes.

Differences between Chromecast models and update frequency

Google releases firmware updates for all Chromecast models, but older devices may receive updates less frequently than newer ones. A third-generation Chromecast (released in 2018) will still receive security updates and bug fixes, but a first-generation device (released in 2013) may not. Google does not publish a schedule for updates, so you cannot predict when the next one will arrive.

Chromecast with Google TV and Chromecast Audio (if you still have one) follow the same automatic update process. The Google Home app will show the firmware version for any of these devices the same way.

Frequently Asked Questions

Can I manually update my Chromecast?

No. Chromecast does not have a manual update option in any menu or app. Updates are automatic and happen only when the device is plugged in and connected to Wi-Fi. You cannot force an update to happen when ready.

What if my Chromecast is stuck on an old firmware version?

Restart the device by unplugging it for 30 seconds. Check that it is plugged into a power outlet directly (not a TV USB port) and that your Wi-Fi signal is strong. Leave it plugged in overnight. If it still has not updated after a week, restart your Wi-Fi router as well.

Do I need to do anything before an update happens?

No. Updates happen automatically in the background. You do not need to stop casting or prepare your device. If you are actively casting when an update starts, the device will wait until you stop before installing it.

Will an update erase my settings or saved networks?

No. Firmware updates do not erase your Wi-Fi network, Google account connection, or any other settings. Your Chromecast will work exactly the same way after the update as it did before.

How often does Chromecast get firmware updates?

Google does not publish an update schedule. Most Chromecast devices receive at least one or two updates per year, but this varies. Security updates may come more frequently if a vulnerability is discovered.