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Firmware

DH_NVR4XXX-4KS2_MultiLang_V4.000.0000001.2.R.190929.bin

Dahua firmware released Sep 29, 2019. May work with 1 device.

Released
Sep 29, 2019
Version
V4.000.0000001.2.R
Size
50.3 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
50d9107afe4c7aa4f1eb2eba5797a84e
SHA-256
dfef58c1a975c4cc0418997e4f6bd8a0a6327870a416aa9af145f27fa1f49a97

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
Sep 29, 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—2019-09-29
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2019-09-29
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2019-09-29
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2019-09-29
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2019-09-29
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2019-09-29
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.