Firmware Updates


Firmware is the permanent, read-only software that controls your power meter. It is installed when the power meter is manufactured.

Firmware Updates

From time-to-time Quarq releases new firmware that enhances operation or addresses problems. Firmware in current generation power meters can be updated using Qalvin. Current generation power meters include:

- Quarq ELSA
- Quarq RIKEN
- Quarq for Cannondale
- Quarq for Specialized

No firmware updates exist for other models.

Firmware Release History

Version 24
June 17, 2015

- Minor tweaks to streamline manufacturing. No rider impact.
- Fixed bug where power meter would not sleep when lying perfectly flat and still
- Changes to ANT+™ messages. (See below.)
- The calibration message has been updated to use the format found in the most recent ANT+™ Bike Power Profile. In addition to the returned value, the power meter now sends a countdown until calibration (zeroing) is complete and a strain reading. We are not aware of any head units whose firmware has been updated to display this information.
- The crank length message has been removed. We originally understood that this message would be sent to the head unit and passed on to your chosen analysis software. This would automatically populate the crank length for quadrant analysis or other charts and calculations that use crank length. The message has since been reversed to configure power meter pedals.

Version 23
August 13, 2014

- Activates accelerometer cadence in all power meters with an LED and CR2032 battery. Accelerometer cadence will switch on automatically when a magnet is not present.
- Table added for multipoint, active (10K) temperature compensation. Active temperature compensation is installed in the Quarq ELSA RS and SRAM XX1 power meter models.
- ANT+ messaging changes to support temperature compensation calibration. - Additional reset mode added.

Version 22
June 10, 2014

- Adjustment to sleep/inactive mode.

Version 21
April 8, 2014

- Removes the "Right Power Sensor Missing" message from Garmin head units.

Version 20
March 25, 2014

- Standby time has been significantly improved. Previous firmware versions used more battery power when inactive, resulting in unacceptable ( < 1 year ) standby time.
- Zero offset stability has been improved. Power meter zero offsets previously drifted after wake-up ( < 10 points ) due to the measurement electronics. This drift has been removed. Note: Installing this firmware will cause your zero offset to change.
- Minor tweaks in ANT messaging for better ANT+ compliance.

Release 19
April 1, 2013

- Adjustment to Power Balance.

Release 18
March 26, 2013

- Adjustment to battery level communication.

Release 16
February 8, 2013

- Reed switch angle sensing improvements.
- Adjustment to ANT+ communication timing.

Release 14
July 24, 2012

- Adjustment to cadence calculation.

Release 13
July 11, 2012

- Fix for manual calibration not persisting.
- Fix for GAM.
- Adjustment to cadence calculation.

Release 12
April 9, 2012

- Minor bug fix.

Release 11
April 7, 2012

- Improvement to battery life.

Release 10
April 3, 2012

- Firmware released.