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Firmware

DH_SD-Darwin_MultiLang_PN_Stream3_V2.821.0000005.1.R.250908.zip

Dahua firmware released Sep 14, 2025. May work with 20 devices, including CA-HZ2033TA-A, CA-HZ2040PA-A, CA-HZ2048PA-A.

Released
Sep 14, 2025
Version
V2.821.0000005.1.R
Size
230.1 MB
Hardware
20 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
2d6b2da9e4d221e4f8ffb91886f60670
SHA-256
b0d8fe67ea8fe57df3686857bb20c611ab4b0e59bfa93f846b9ab910287e411c
Changelog
Release notes

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (20 devices).

Where these IDs come from
  • hwid in DH_SD-Darwin_MultiLang_PN_Stream3_V2.821.0000005.1.R.250908.bin: the device's own hardware check list, 20 IDs
  • Install in DH_SD-Darwin_MultiLang_PN_Stream3_V2.821.0000005.1.R.250908.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
  • check.img in DH_SD-Darwin_MultiLang_PN_Stream3_V2.821.0000005.1.R.250908.bin: the device's own hardware check list, 20 IDs

Technical details

Read from inside the firmware (zip archive).

Architecture
arm
OEM build
General
Bootloader
U-Boot 2016.11-svn17389
Flash
7.2 GB
Image dates
Sep 8, 2025
Security
Signed
Language & video
English by default · 13 languages · PAL
Supported languages (13)

English, Italian, Spanish, Russian, French, German, Portuguese, Polish, Korean, Czech, Dutch, Arabic, SpanishEU

Flash layout: 27 partitions, 9 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
mini-Boot0x00x1000001.0 MBdhboot-min.bin.img—2025-09-08
U-Boot0x2000000x3000001.0 MBdhboot.bin.img—2025-09-08
hwid0x3000000x4000001.0 MBnot written——
updateflag0x4000000x5000001.0 MBnot written——
partition(ro)0x5000000x6000001.0 MBpartition-x.cramfs.imgcramfs2025-09-08
lens0x6000000xa000004.0 MBnot written——
dgs0xa000000xe000004.0 MBnot written——
config0xe000000x1e0000016.0 MBnot written——
backup0x1e000000x2e0000016.0 MBnot written——
syslog0x2e000000x3e0000016.0 MBnot written——
devconfig0x3e000000x4e0000016.0 MBnot written——
custom(ro)0x4e000000x52000004.0 MBcustom-x.squashfs.imgsquashfs2025-09-08
product(ro)0x52000000x56000004.0 MBpd-x.squashfs.imgsquashfs2025-09-08
Kernel0x56000000x660000016.0 MBkernel.img—2025-09-08
web(ro)0x66000000x860000032.0 MBweb-x.squashfs.imgsquashfs2025-09-08
romfs(ro)0x86000000x18600000256.0 MBromfs-x.squashfs.imgsquashfs2025-09-08
backpart0x186000000x187000001.0 MBnot written——
bakcustom0x187000000x18b000004.0 MBnot written——
backproduct0x18b000000x18f000004.0 MBnot written——
backkernel0x18f000000x19f0000016.0 MBnot written——
backweb0x19f000000x1bf0000032.0 MBnot written——
backromfs0x1bf000000x2bf00000256.0 MBnot written——
firmware(ro)0x574000000x974000001.0 GBfirmware-x.squashfs_aa.imgsquashfs2025-09-08
bakfirmware0x974000000xd74000001.0 GBnot written——
sfmw0xd74000000x1274000001.3 GBnot writtenext4—
appdata0x1274000000x1a74000002.0 GBnot written——
coredump0x1a74000000x1ccc00000600.0 MBnot written——

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