Version 3 - February 6, 2017 Fixes an issue with abnormal cadence and power values as the result of significant side-to-side motion, most often seen while sprinting. Related articles Version 2 - December 20, 2016 How to Qalvin Legacy - Firmware update Version 10 - April 3, 2012 Version 4 - May 4, 2017 Legacy Power Meter Qalvin Compatibility