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Firmware

DH_NVR4XXX-4KS2_MultiLang_V4.001.0000000.1.R.200319.rar

Dahua firmware released Mar 19, 2020. May work with 1 device.

Released
Mar 19, 2020
Version
V4.001.0000000.1.R
Size
51.7 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
44ae33152b6f2111740c8e0e0d252f9a
SHA-256
ef251c2225a209a80ebfbadd747a302ef4fa6e4d2cbfe870ace69c8aea6dc460

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 in DH_NVR4XXX-4KS2_MultiLang_V4.001.0000000.1.R.200319.bin: the installer script's board checks, 2 IDs

Technical details

Read from inside the firmware (rar archive).

SoC
HiSilicon Hi3798CV200
Architecture
arm
Flash
128.0 MB
Image dates
Mar 19, 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—2020-03-19
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2020-03-19
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2020-03-19
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2020-03-19
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2020-03-19
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2020-03-19
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.