Troubleshooting

Firmware

• My doppel is stuck in a continuous spin and won’t turn off
• How to reset or update the firmware on your doppel
• My firmware update is taking more than a few minutes
• I’ve received the error message ‘Fatal: Not supported, on operation start DFU update’

Bluetooth Connectivity

• I can't pair my doppel with the app
• My doppel unpairs with the app regularly
• doppel stops running when I close the app

App Bugs

• My heart rate reading fails
• My app drains my device's battery too quickly
• I keep getting error messages in the app. What do these mean?
• I’m getting an error which says ‘Could not cloud sync. Please check your internet connection.’