What to Do if Your WHOOP 4.0 Sensor LEDs Are Stuck On or Off

Follow the steps below if your 4.0 sensor LEDs:

  • Do not turn off when you remove your WHOOP 4.0 from your wrist or WHOOP Body apparel, or
  • Do not turn on when wearing your WHOOP 4.0

WHOOP_4.0_Reboot.gif


  1. In the WHOOP app, select the status bar at the bottom of the Overview page (below the Health Monitor) to open Device Settings:

    WHOOP_Device_Status.png


  2. From Device Settings, select the Advanced tab. 

  3. Select Firmware Check. 

  4. If there is an update available, update your firmware to the latest version. Keep your WHOOP 4.0 and mobile device close by while updating. Note that the update may take several minutes.

  5. After the update is complete, revisit Device Settings and select Reboot Device. Keep your 4.0 and mobile device close by for a few seconds until the reboot is complete.

    Note: Rebooting your WHOOP will not result in any data loss – it resets your LEDs to ensure they’re working properly. If your WHOOP falsely registered as off-body, you may not have collected data for a period of time prior to rebooting. 
  6. If there is no firmware update available, revisit Device Settings and select Reboot Device. Keep your 4.0 and mobile device close by for a few seconds until the reboot is complete.

Check out our YouTube video below on how to reboot your WHOOP 4.0:

After performing these steps, you will see your WHOOP sensor (the green lights) properly turn off when removed from your wrist or any body location, and properly turn on when on your wrist or any body location.

For additional assistance, contact Membership Services via in-app chat or submit a request

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