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.