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Firmware

DH_IPC-WHX-Hertz2_Eng_PN_V2.840.0000000.3.R.20240119.zip

Dahua firmware released Jan 19, 2024. May work with 7 devices, including IPC-A42EN-S2-Cayenne, IPC-C42EN-S2-Cayenne, IPC-E2AP.

Released
Jan 19, 2024
Version
V2.840.0000000.3.R
Size
7.4 MB
Hardware
7 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
e29b623dec2f4b18d9c0acd2c9b58523
SHA-256
6dc838c4a6796b3140ed7e37b83fb6e7013d343048b496f0c1a299416ce9efdf

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (7 devices).

Where these IDs come from
  • hwid in DH_IPC-WHX-Hertz2_Eng_PN_V2.840.0000000.3.R.20240119.bin: the device's own hardware check list, 7 IDs
  • Install in DH_IPC-WHX-Hertz2_Eng_PN_V2.840.0000000.3.R.20240119.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
  • check.img in DH_IPC-WHX-Hertz2_Eng_PN_V2.840.0000000.3.R.20240119.bin: the device's own hardware check list, 7 IDs

Technical details

Read from inside the firmware (zip archive).

Architecture
arm
OEM build
General
Kernel
Linux 4.9.84
Flash
8.0 MB
Image dates
Jan 19, 2024
Security
Signed, not encrypted, security baseline V2.1
Language & video
English by default · PAL
Flash layout: 6 partitions, 4 written by this firmware

From the firmware's partition table (partitionV2.txt).

PartitionStartEndSizeImageFilesystemBuilt
U-Boot0x00x30000192.0 KBdhboot.bin.img—2024-01-19
hwid0x300000x4000064.0 KBnot written——
partition(ro)0x400000x5000064.0 KBpartition-x.cramfs.imgcramfs2024-01-19
Kernel0x500000x1a00001.3 MBkernel.img—2024-01-19
romfs(ro)0x1a00000x7b00006.1 MBromfs-x.squashfs.imgsquashfs2024-01-19
config0x7b00000x800000320.0 KBnot writtenjffs2—

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 V2.1 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.