V4.0.9 build 130106 1. Add passive bad pixel correction in 1.3 megapixel cameras, active bad pixel correction is enhanced in 3 megapixel; 2. Add four models of DS-2CD2032-I, DS-2CD2132-I, DS-2CD2232-I, DS-2CD2332-I; 3. Add port collision detection including client, ActiveX and SADP tool; 4.Add frame loss handling system. It ensures main stream real time prior and DSP will reduce frame rate in sub stream in enough performance. 5. Under the force day or night model, delay is added to infrared light switch time. The original infrared light switch time increases from one second to three seconds, that it prevents infrared shock partly under non-automatic model.