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NVR had a virus. Did an update firmware to 4.0 Virus still exists. I can access the NVR but cannot configure it. All options are greyed out. Many fields are pre-populated with many +++++++++++ and will not allow any change. How to fix ?

Need some help on how to access my NVR. It was hacked and I did a factory restore. It will not accept any password then or now. SADA tool is not working since I don't know any password. I was thinking about TFTP but could not find the files and don't know how to use it.

I am getting 3 pictures on motion detection How can I set the NVR for one picture ?

Using hikvision NVR with motion detection Working good but getting 3 pictures for each motion How can I set it for one picture per motion ?

Have Dahua PTZ sd-65230-hni camera working on Dahua NVR How can I get Dahua PTZ ro work on Hikvision NVR 7616? Need detailed protocol

I am using ip network camera with Dahua NVR 4232 Camera A is remote channel 1 and assigned to viewing on NVR channel 1 (Dahua) Camera B is remote channel 1 and is assigned to viewing on NVR channel 3 (Imorx) Viewing works fine because A is on channel 1 and B is on channel 3 When A and B...