How to upgrade dahua firmware

dahua firmware download ------------------------ DVR/HCVR/NVR http://www.dh-vision.com/main/firmware/Recorders/3.2 Firmware/ ------------------------ DVR DVR2xxx DVR5xxx DVR7xxx DVRxx04HF-X-E http://www.dh-vision.com/main/firmware/Recorders/3.2 Firmware/DVR/ ------------------------ HCVR HCVR5104H HCVR5108H HCVR5104H-V2 HCVR5108H-V2 HCVR7416L HCVR7816S HCVR5432L http://www.dh-vision.com/main/firmware/Recorders/3.2 Firmware/HCVR/ ------------------------ NVR NVR4xxx NVR6000 NVR6xxx NVR7xxx http://www.d

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