A note on models: The Petrel, Petrel 2, and Perdix share a common firmware base. Due to hardware differences not all features are available on all models. The following changes apply to all models unless otherwise noted.
Version 38 (2016-09-26):
FIX: Fixed a problem where under certain conditions a value between 0 to 5 minutes could be added to the surface interval time after a turn off then turn on cycle.
FIX: Changed the compass heading mark colour back to green (instead of white).Download the Entire V38 Release Notes