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Firmware

DH_NVR4XXX-4KS2_MultiLang_V4.001.0000000.0.R.200221.bin

Dahua and Global DS firmware released Feb 21, 2020. May work with 1 device.

Released
Feb 21, 2020
Version
V4.001.0000000.0.R
Size
51.6 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
87d58a048d9ed84f330635f92f102130
SHA-256
f6d9eb30410e377cb1eccc3b73acb0d8f63d09fb3e9e254d7f8d72a572d56073

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
Feb 21, 2020
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—2020-02-21
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2020-02-21
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2020-02-21
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2020-02-21
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2020-02-21
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2020-02-21
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.