Note: This solution is only applicable for DiamondClean Smart toothbrushes. If you have a DiamondClean Smart toothbrush, follow these steps to check if you have the latest firmware installed on your toothbrush handle:
- Update (or download) the latest version of the Philips Sonicare app from the App Store or Google Play.
- Open the Philips Sonicare app
- Tap on the menu icon in the top left corner
- Go to 'My Products'
- Select your toothbrush
- Select 'Handle update' to see if any updates are available
If you have updates available, please update the firmware of your handle by following the instructions from the Philips Sonicare app.