WHOOP 4.0 Firmware Release Notes

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At WHOOP, we strive to continuously improve our product. We deliver these improvements via regular firmware updates. Each release contains various minor bug fixes and improvements, detailed in the release notes below. You can update your firmware via the WHOOP app by following the instructions in this guide.

Release notes for both the device's core firmware and Bluetooth firmware are listed below.

Note: We release firmware updates in phases which allows us to monitor the performance of new releases. This allows us to make any necessary changes before all members receive an update. If you see new release notes, but do not see a prompt to update your firmware, please be patient and check your app for an available update at a later time. It may take 1-2 weeks before all of our members receive the update.

Firmware release notes

Bluetooth release notes

Firmware version 41.11.7.0 - Current version

Improved HR estimation during sleep
Bug fixes and improvements

Bluetooth firmware 17.2.2.0 - Current version

Minor bug fixes and performance improvements

Firmware version 41.11.6.0

Improvements to on-body detection
Improvements to Heart Rate detection
Optimizations to internal storage
Bug fixes and improvements

Bluetooth firmware 17.1.1.0

Minor bug fixes and performance improvements

Firmware version 41.11.5.0

Improvements to data confidence
Improvements to error reporting and logging
Bug fixes and improvements

Firmware version 41.11.4.0

Improvements to accuracy in garment accessories
Improvements to wear detection
Improvements to the haptic alarm
Bug fixes and improvements

Firmware version 41.11.2.0

Further improvements to wear detection performance
Further improvements to SpO2 measurements
Minor bug fixes

Firmware version 41.10.1.0

Major update to Wear Detection algorithms. Please update to resolve any on/off-wrist detection issues.
Improvements to SpO2 (Blood Oxygen) measurements
Improvements to On-Wrist and Off-Wrist detection
Improvements to Any-Wear detection
Minor bug fixes

Firmware version 41.9.2.0

Improved wear detection performance
Resolved rapid battery drain on some devices

Firmware version 41.9.1.0

Further improvements to Wear Detection performance
Resolved a case where a WHOOP with very low battery would not accept a charge from the Battery Pack
Firmware will reject attempts to set an empty WHOOP custom name
Resolved a case where the WHOOP would drain battery quicker than expected

Firmware version 41.8.0.29

Improvements to Wear Detection, the ability for WHOOP to determine if it is on or off the body
Improved firmware stability
Minor bug fixes