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Polar H9 firmware update 2.0.4
Date:
2025-12-04
There is a new firmware update available for Polar H9. Update your heart rate sensor on your mobile via the Polar Flow or Polar Beat app. See detailed instructions here.
Release date: December 4th, 2025
Version number: 2.0.4
Enhancements/fixes:
- Factory reset via Flow app (Android & iOS): You can now restore your H9 sensor to factory settings through the Polar Flow app.
- Bluetooth Low Energy (BLE) secure connection: BLE connections now support secure pairing for improved data protection.
- Settings backup: Your sensor settings are now preserved when you change the battery or complete a firmware update.
- Other bug fixes and quality enhancements for better performance and reliability.