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I bought some AHD cameras from China. When I connect to Hikvision DS 7208HQHI-F1 DVR, just can see black &white colour. Hikvision DVR have. Check box to choose Turbo, AHD and IP. Plz give me advice, thanks in advance. Best regards, Aung

I have 7616ni-se/p NVR. I bought NVR with 8 cameras only. Everything is working fine. Last a few days, I bought 3 more ip cameras, but cannot add those ip cameras to NVR. Hikvision NVR firmware is 3.0.9. Hikvision New ip camera firmware is 5.4.1. I would like to upgrade NVR firmware , or can...