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Firmware

DH_IPC-PT-4G-AOV-Cauchy_Eng_PN_V2.820.0000000.17.R.260622.zip

Dahua firmware released Jul 15, 2026. May work with 2 devices, including IPC-BP3EW-4G, IPC-BP5E-4G.

Released
Jul 15, 2026
Version
V2.820.0000000.17.R
Size
30.4 MB
Hardware
2 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
13a42b9d729a820193680731eaa260d0
SHA-256
7846e6585ae37ec9e82a625d08ee9ebcc1f48fb287430db2610f911b9c48e087
Changelog
Release notes

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (2 devices).

Where these IDs come from
  • hwid in DH_IPC-PT-4G-AOV-Cauchy_Eng_PN_V2.820.0000000.17.R.260622.bin: the device's own hardware check list, 2 IDs
  • Install in DH_IPC-PT-4G-AOV-Cauchy_Eng_PN_V2.820.0000000.17.R.260622.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
  • check.img in DH_IPC-PT-4G-AOV-Cauchy_Eng_PN_V2.820.0000000.17.R.260622.bin: the device's own hardware check list, 2 IDs

Technical details

Read from inside the firmware (zip archive).

Architecture
arm
OEM build
General
Image dates
Jun 22, 2026
Security
Signed, security baseline V2.4
Language & video
English by default · PAL
Software version
V2.820.0000000.17.R.260622
Flash layout: 4 partitions, 4 written by this firmware

From the image headers (only partitions this firmware writes).

PartitionStartEndSizeImageFilesystemBuilt
U-Boot0x1400000x2c00001.5 MBdhboot.bin.img—2026-06-22
Kernel0x6400000x104000010.0 MBkernel.img—2026-06-22
romfs0x10400000x2c4000028.0 MBromfs-x.squashfs.imgsquashfs2026-06-22
rofile0x52400000x634000017.0 MBrofiles.bin.img—2026-06-22

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 V2.4 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.