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New firmware "V4.71.005 build 220524" for K-series » [76 77 86 NI-K2 K4 K8] In the release notes PDF there are new features to read about...

I have now upgraded my two DS-7616NI-K2 with firmware NVR_K51_BL_ML_STD_V4.32.115_211129 Change log: "Fix known defects and optimize product performance."...

If you move the High Voltage AC PS outside of the chassis, then you only have the Low Voltage DC from the external PS inside the chassis, and then there is no need of earth from the AC mains power supply.

@JT_Singh , you need to unpack/unzip the downloaded file first. Then you will have a digicap.dav file that you can upgrade the NVR with.

As dazulrich & Tricky are writing, it is the raster/perforation in the sheet metal case that makes most of the fan/airflow-noise. If you have the fan removed in the free air, it is much more quiet. Cut the perforation away, and it will be much better. Replace with a low noise fan & it will be...

I have now upgraded/"downgraded" eight of my DS-2CD2142FWD-IW & DS-2CD2442FWD-IW from 5.4.41 to 5.4.5. They now have hik-connect access & the encoding version 7.3 & web version 4.0.1 also have newer dates. So it must have been som kind of build naming issue, or something.

Okay, strange. Could it be that it should have been 5.4.4.1 ? Are there any new functions in 5.4.5 that we don't have in 5.4.41 ? - I found a US Readme.txt Hikvision USA This one seems to say that 5.4.5 is the latest in some way.

Hi Soren, Isen't the 2CD2x42FWD included in 2CD2xx2FWD Series? I have updated my 2CD2x42FWD with this f/w. If you say that .5 build 170124 is a newer version than .41 build 170309, then you have to explain that more in detail for me. Does Hikvision have some special way to count their builds...

DS-2CD2xx2FWD Series Firmware 5.4.41 http://oversea-download.hikvision.com/uploadfile/Firmware/Firmware_update/IPC_2XX2FWD_EN_STD_5.4.41_170309.zip Hikvision UK & Ireland

Hi, Here you have 5.4.41 http://oversea-download.hikvision.com/uploadfile/Firmware/Firmware_update/IPC_2XX2FWD_EN_STD_5.4.41_170309.zip Hikvision UK & Ireland // Fredrik