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Firmware

DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.5.R.191218.bin

Dahua firmware released Dec 18, 2019. May work with 1 device.

Released
Dec 18, 2019
Version
V4.000.0000001.5.R
Size
50.3 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
ee438ec52d7f791b9871bc5a4bb04c2c
SHA-256
fb455e8a3005da7c6a85d83c176e4471d14b848d3aa0db79347611105b57cc32

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (1 device). Names with placeholders such as x or XXX are board families.

Where these IDs come from
  • Install.lua: the installer script's board checks, 2 IDs

Technical details

Read from inside the firmware (dahua package (zip variant)).

SoC
HiSilicon Hi3798CV200
Architecture
arm
Flash
128.0 MB
Image dates
Dec 18, 2019
Security
Signed, security baseline V1.4, upgrade security version V2.0
Flash layout: 12 partitions, 6 written by this firmware

From the recorder's Install.lua partition table.

PartitionStartEndSizeImageFilesystemBuilt
boot0x00x3000003.0 MBu-boot.bin.img—2019-12-18
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2019-12-18
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2019-12-18
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2019-12-18
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2019-12-18
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2019-12-18
config0x54000000x5a000006.0 MBnot written——
logs0x5a000000x640000010.0 MBnot written——
extend10x64000000x6c000008.0 MBnot written——
backup0x6c000000x780000012.0 MBnot written——
extend20x78000000x80000008.0 MBnot written——

About the security baseline: firmware with a higher security baseline can stop a device going back to older firmware. A device already on a higher baseline than V1.4 may refuse this file, and after installing it you may not be able to downgrade to firmware with a lower baseline.

Other files for much of the same hardware, from any vendor.