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Firmware

General_NVR4XXX-4KS2_MultiLang_V4.001.0000000.1.R.200319.bin

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

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

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
3f90471d0a39277f6a55604f1dcdb627
SHA-256
7ce556a65a187ecf828fe6df80e1806d951ce51c5de77f56c9358bb625652abc

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
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.