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Firmware

Customer_NVR4XXX-4KS2_Eng_Amecrest-10003_V4.000.00AC000.0.T.20210226.bin

Amcrest firmware released Feb 26, 2021. May work with 1 device.

Released
Feb 26, 2021
Version
V4.000.00AC000.0.T
Size
47.5 MB
Hardware
1 device

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
eefc8a2943e85d055e250fda6140204f
SHA-256
66dfd72377752a983a3fe8bb0833ba804a7949ec1a6e194ec5e5bc02ab23c3d0

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
Feb 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—2021-02-26
env0x3000000x5000002.0 MBnot written——
uImage0x5000000xf0000010.0 MBuImage.img—2021-02-26
rootfs0xf000000x450000054.0 MBromfs-x.squashfs.imgsquashfs2021-02-26
web0x45000000x4f0000010.0 MBweb-x.squashfs.imgsquashfs2021-02-26
custom0x4f000000x51000002.0 MBcustom-x.squashfs.imgsquashfs2021-02-26
logo0x51000000x54000003.0 MBlogo-x.squashfs.imgcramfs2021-02-26
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.

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