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Updating the firmware

To keep your watch up to date and to get the best performance, always make sure to update the firmware whenever a new version is available. Firmware updates are performed to improve the functionality of your watch.

You won't lose any data due to the firmware update. Before the update begins, the data from your watch is synced to the Flow web service.

With phone or tablet

You can update the firmware with your phone if you're using the Polar Flow mobile app to sync your training and activity data. The app will let you know if there's an update available and will guide you through it. We recommend that you plug the watch into a power source before starting the update to ensure a flawless update operation.

The wireless firmware update may take up to 20 minutes, depending on your connection.

With computer

Whenever a new firmware version is available, FlowSync will notify you when you connect the watch to your computer. The firmware updates are downloaded via FlowSync.

To update the firmware:

  1. Plug your watch into your computer with the custom cable that came in the box. Make sure that the cable snaps into place. Align the ledge on the cable with the slot on your watch (marked with red).

  2. FlowSync starts syncing your data.
  3. After syncing, you are asked to update the firmware.
  4. Choose Yes. The New firmware is installed (this may take up to 10 minutes), and the watch restarts. Please wait until the firmware update has been finalized before you detach the watch from your computer.