Online we have a document explaining the different firmware releases done for the Avonic CamDirector® CD500 and Teacher Tracker software. You can find the latest version at the bottom of the CamDirector webpage in this Download section: 



This document describes which changes were made to the firmware. There is also a history of all the firmware changes and releases


* If you need to know your current firmware version, open your CamDirector web GUI and navigate to Settings > Status > Firmware (at the bottom of the page)