DS-7608NI-I2/8P Australian Firmware or Global?

Thanks for the advice everyone, only reason I was looking for updated firmware is that I've been having issues with intrusion detection on some of my ColorVu cameras
 
That is usually a result of the field of view and/or settings of the camera parameters.

Post some screenshots showing your field of view and the settings for the camera and we can probably say "oh you need to try this or that".