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Firmware

General_NVR4XXX-4KS2_MultiLang_V4.001.0000005.1.R.210526.bin

CCTV App and Dahua firmware released May 26, 2021. May work with 1 device.

Released
May 26, 2021
Version
V4.001.0000005.1.R
Size
55.7 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
38dc2455b0413453fddef4a2de8e9ee4
SHA-256
66669ffc15e7e66b1e5716a7a12cd871b73edcfba582df77a2835c3cb645ede6

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
May 26, 2021
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—2021-05-26
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2021-05-26
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2021-05-26
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2021-05-26
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2021-05-26
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2021-05-26
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.

Also published as

Truncated copies: only the start of this file, cut off part-way, so a device will reject them. Use the download above instead.

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