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 for Cannondale
Quarq for Specialized

No firmware updates exist for other models.

Firmware Release History

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.