Firmware Version 2.2.0
Please check the version number of the existing firmware on the DVR.
Hybrid DVR firmware starts with "2" eg. 2.0.1
Non-Hybrid DVR firmware starts with "1" eg. 1.0.1
Firmware Version 1.5.1
E-DVR-1640ED/SD/HD - Quick User Guide
Steps for Selecting cameras, performing playback and controlling speed-dome cameras