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Firmware

General_NVR4XXX-4KS2_MultiLang_V4.001.0000005.2.R.220719.bin

ENS Security firmware released Jul 19, 2022. May work with 1 device.

Released
Jul 19, 2022
Version
V4.001.0000005.2.R
Size
54.3 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
dd3f473ee706a649ae4ae6b3918be5df
SHA-256
319ab214e80c0a5bc8fd4b886a69c4543eac5356ee4bd0e9badc09d66661195c

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
Jul 19, 2022
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—2022-07-19
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2022-07-19
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2022-07-19
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2022-07-19
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2022-07-19
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2022-07-19
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.