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Firmware

Amcrest_NVR2XXX-4KS2_Eng_10002_V4.000.00AC000.0.R.20200522.bin

Amcrest firmware released May 22, 2020. May work with 1 device.

Released
May 22, 2020
Version
V4.000.AC000
Size
47.2 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
dc4bc3b14680d4f3906f1727d833b5a4
SHA-256
8cb23ed15419f07ff369fa81f0925716943aee9d82f410a4d0a98cd4e6a8ca8f

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: one of Hi3536, Hi3536C
Architecture
arm
Bootloader
U-Boot 2010.06-svn4245
Flash
128.0 MB
Image dates
May 22, 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—2020-05-22
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2020-05-22
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2020-05-22
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2020-05-22
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2020-05-22
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgsquashfs2020-05-22
logs0x54000000x5a000006.0 MBnot written——
config0x5a000000x640000010.0 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.