Chromecast updates happen automatically, but you can check the status and force an update if needed

Your Chromecast device downloads and installs updates on its own, usually overnight when it is plugged in and connected to your Wi-Fi. You do not need to do anything for most updates. However, if you want to check whether an update is available right now, or if your device seems stuck on an old version, you can manually check and trigger an update through the Google Home app on your phone or tablet.

The process takes a few minutes and requires your Chromecast to stay plugged in and connected to Wi-Fi the entire time. If the update is interrupted — for example, if the power cuts out or Wi-Fi drops — your device may fail to restart. For that reason, it is worth doing this when you have time to watch it complete.

Key Takeaways

  • Chromecast updates install automatically overnight, so most users never need to manually update.
  • You can check for updates and force one to install when ready using the Google Home app on your phone.
  • Manual updates take a few minutes and require the device to stay plugged in and connected to Wi-Fi without interruption.
  • If an update fails, unplugging the Chromecast for 30 seconds and plugging it back in usually fixes the problem.

How to check for updates in the Google Home app

Open the Google Home app on your phone or tablet — the same app you used to set up your Chromecast in the first place. Tap the device you want to update (it will show the name you gave it, like "Living Room" or "Bedroom"). Tap the settings icon, which looks like a gear, in the top right corner of the screen.

Scroll down until you see "Device information" or "About". Tap it. You will see the current software version listed. If an update is available, you will see a button that says "Update" or "Check for updates". Tap it. The app will read and install the update, and your Chromecast will restart when it is done. This usually takes two to five minutes.

What to do if the update gets stuck or fails

If the update seems to be taking longer than ten minutes, or if your Chromecast restarts but the version number has not changed, the update may have failed. The most common cause is a Wi-Fi connection that dropped during the process.

Unplug your Chromecast from the power outlet and wait 30 seconds. Plug it back in. Wait for the device to restart — you will see the Google logo on your screen — and then try checking for updates again in the Google Home app. If it fails a second time, restart your Wi-Fi router the same way: unplug it for 30 seconds, plug it back in, and wait for it to fully restart before trying the update again.

Why your Chromecast might not be updating automatically

Automatic updates happen when your Chromecast is plugged in, connected to Wi-Fi, and idle — usually late at night or early morning. If you use your Chromecast constantly, or if you unplug it frequently, it may not have had a chance to update on its own.

Some older Chromecast models (first generation, released in 2013) stopped receiving updates years ago. If you have one of those devices and the version number has not changed in over a year, it is probably no longer supported. Newer models — Chromecast with Google TV, Chromecast Audio, and second-generation Chromecast — continue to receive updates for several years after release.

How to tell which Chromecast model you have

Open the Google Home app and tap your device. Go to settings and look for "Device information" or "About". The model name will be listed there — it will say something like "Chromecast" (second generation), "Chromecast with Google TV", or "Chromecast Audio". You can also look at the physical device: newer models have a flat, round shape, while the original Chromecast looks like a small stick with a cord attached.

If you are not sure whether your model still receives updates, search online for the model name plus "end of support" or "last update". Google publishes a support timeline for each model, and you can find it on their official support pages.

What happens during a Chromecast update

When an update installs, your Chromecast will restart and briefly show the Google logo on your screen. During this time, you will not be able to cast to it — if you try to send a video or photo from your phone, it will fail. The device will be ready to use again once the restart is complete, which usually takes one to three minutes.

Updates do not erase any settings or passwords you have saved. Your Wi-Fi connection, paired devices, and any preferences will remain the same after the update finishes.

Frequently Asked Questions

Can I unplug my Chromecast while it is updating?

No. Unplugging it during an update can corrupt the software and leave your device unable to restart. If you accidentally unplug it, plug it back in when ready. If it does not restart on its own after a few minutes, unplug it for 30 seconds and plug it back in again.

Do I need to update my Chromecast if it is working fine?

Updates usually include security fixes and bug improvements, so it is worth installing them even if your device seems to work well. However, if an update is not available yet, there is no need to force one — automatic updates will arrive on their own schedule.

Why does my Chromecast keep asking me to update?

If the notification keeps appearing after you have tried to update, the update may have failed to install properly. Try the manual update process again, making sure your Wi-Fi connection is strong and your device stays plugged in the entire time. If it fails again, restart your router and try once more.

Will updating my Chromecast change how it works?

Most updates are small and you will not notice any difference. Occasionally, a larger update adds new features or changes the interface slightly, but your basic ability to cast videos, music, and photos will work the same way.