Why can’t I update my Fitbit device?

For best results, remove other Fitbit watches and trackers from your phone’s Bluetooth settings.

Before you begin the firmware update, plug your watch into the charger. Make sure your watch is in range of your home or work Wi-Fi network during the update, or connected to your nearby phone for Fitbit Sense 2, Fitbit Versa Lite Edition, and Fitbit Versa 4.

Note that firmware updates for Fitbit Versa Lite Edition can take an hour or more if you perform a factory reset before you begin the update. If your firmware is version 38.6.1.1, attach your watch to the charging cable and plug the charging cable into a USB port on your computer before you begin the update. Keep your Fitbit device close to your phone or tablet to complete the update.

If the firmware update fails, you may see this image on your watch’s screen:

Follow the troubleshooting steps below based on your issue to resolve the problem.

Low Battery

If your watch isn’t sufficiently charged before starting the update, you may see this image on your screen or a low battery message in the Fitbit app:

Wait until the battery is at least 50% charged to start the update and keep your watch plugged into the charger. To check the battery level, tap the screen or press any button while the watch is charging.

No Clock after Update

If you see a clock error message on your watch’s screen after the update, choose a clock face in the Fitbit app to resolve the problem. For more information, see How do I change the clock face on my Fitbit device?

Update Failed over Wi-Fi

If you have trouble updating your watch over Wi-Fi, try these steps to resolve the problem. For Sense 2, Versa Lite Edition, and Versa 4, see Update Failed over Bluetooth.

1. Make sure your watch is connected to the Wi-Fi network you want to use. For instructions on how to add a network, see How do I connect my Fitbit watch to Wi-Fi?
2. Move your watch closer to your router.
3. Make sure your router is connected to the internet.
4. Restart your watch. For instructions, see How do I restart my Fitbit device?
5. Remove your watch from your Fitbit account. For instructions, see How do I set up my Fitbit device?
6. Remove your watch from the list of Bluetooth devices paired to your phone. On your phone, go to SettingsBluetooth find the watch in the list find an option to forget the device.
7. Reconnect your watch to your Fitbit account. For instructions, see How do I set up my Fitbit device?
8. Try again to update your watch.

If the update fails, restart your phone and try again.

If you can’t update your watch over Wi-Fi, follow the on-screen instructions in the Fitbit app to update your watch over Bluetooth instead. Note that firmware updates over Bluetooth may take significantly longer to complete.

Update Failed over Bluetooth

If you have trouble updating your watch over Bluetooth, try these steps to resolve the problem:

1. Turn Bluetooth on and off on your phone.
2. Restart your watch. For instructions, see How do I restart my Fitbit device?
3. (Versa Lite only) On your watch, open the Settings app About. If your firmware version is 38.6.1.1, attach your watch to the charging cable and plug the charging cable into a USB port on your computer before you begin the update. Keep your Fitbit device close to your phone or tablet to complete the update.
4. Remove your watch from your Fitbit account. For instructions, see How do I set up my Fitbit device?
5. Remove your watch from the list of Bluetooth devices paired to your phone. On your phone, go to SettingsBluetooth find the watch in the list find an option to forget the device.
6. Reconnect your watch to your Fitbit account. For instructions, see How do I set up my Fitbit device?
7. Try again to update your watch.

If the update fails, restart your phone and retry the update.

If you still have trouble updating your watch, contact Customer Support.