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Firmware

DH_SD-Chen-Leo_MultiLang_PN_Stream3_V2.812.0000018.2.R.260827.zip

Dahua firmware released Sep 16, 2026. May work with 37 devices, including CA-HZ2023ZB-A, CA-HZ2023ZB1-C, CA-HZ2023ZB2-A.

Released
Sep 16, 2026
Version
V2.812.0000018.2.R
Size
83.1 MB
Hardware
37 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
42250f628f29dcec5ee139332a0ee3dc
SHA-256
c4da7823f3dda57bec83f5c0d4d9e51085e28ea41cfca4d734d93d7357d8c898
Changelog
Release notes

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (37 devices).

Where these IDs come from
  • hwid in DH_SD-Chen-Leo_MultiLang_PN_Stream3_V2.812.0000018.2.R.260827.bin: the device's own hardware check list, 37 IDs
  • Install in DH_SD-Chen-Leo_MultiLang_PN_Stream3_V2.812.0000018.2.R.260827.bin: the installer's device list (board families), 1 ID, vendor Dahua (not counted: a more specific list exists)
  • check.img in DH_SD-Chen-Leo_MultiLang_PN_Stream3_V2.812.0000018.2.R.260827.bin: the device's own hardware check list, 37 IDs

Technical details

Read from inside the firmware (zip archive).

Architecture
arm
OEM build
Dahua
Bootloader
U-Boot 2010.06-svn10633
Flash
256.0 MB
Image dates
Aug 27, 2026
Security
Signed, encrypted, security baseline V2.1
Language & video
English by default · 23 languages · PAL
Supported languages (23)

English, Italian, Spanish, Russian, French, German, Portuguese, Polish, Korean, Czech, Dutch, Arabic, SpanishEU, Turkish, Ukrainian, Hebrew, Hungarian, Romanian, Thai, Indonesian, Vietnamese, TradChinese, Japanese

Flash layout: 28 partitions, 10 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
mini-Boot0x00x1000001.0 MBdhboot-min.bin.img—2026-08-27
maxflash(ro)0x00x10000000256.0 MBnot written——
U-Boot0x2000000x3000001.0 MBdhboot.bin.img—2026-08-27
hwid0x3000000x4000001.0 MBnot written——
updateflag0x4000000x5000001.0 MBnot written——
partition(ro)0x5000000x6000001.0 MBpartition-x.cramfs.imgcramfs2026-08-27
lens0x6000000x8000002.0 MBnot written——
dgs0x8000000x9000001.0 MBnot written——
config0x9000000xd000004.0 MBnot writtenubi—
backup0xd000000x11000004.0 MBnot writtenubi—
syslog0x11000000x15000004.0 MBnot writtenubi—
devconfig0x15000000x19000004.0 MBnot writtenubi—
custom(ro)0x19000000x1d000004.0 MBcustom-x.squashfs.imgsquashfs2026-08-27
product(ro)0x1d000000x21000004.0 MBpd-x.squashfs.imgsquashfs2026-08-27
Kernel(ro)0x21000000x24000003.0 MBkernel.img—2026-08-27
Kernelslv(ro)0x24000000x26000002.0 MBkernelslv.img—2026-08-27
web(ro)0x26000000x300000010.0 MBweb-x.squashfs.imgsquashfs2026-08-27
romfs(ro)0x30000000x640000052.0 MBromfs-x.squashfs.imgsquashfs2026-08-27
bakpart0x64000000x65000001.0 MBnot written——
bakcustom0x65000000x69000004.0 MBnot written——
bakproduct0x69000000x6d000004.0 MBnot written——
bakkernel0x6d000000x70000003.0 MBnot written——
bakkernelslv0x70000000x72000002.0 MBnot written——
bakweb0x72000000x7c0000010.0 MBnot written——
bakromfs0x7c000000xb00000052.0 MBnot written——
res(ro)0xb0000000xb5000005.0 MBnot written——
firmware(ro)0xb5000000xfb0000070.0 MBfirmware-x.squashfs.imgsquashfs2026-08-27
appData0xfb000000xff000004.0 MBnot writtenubi—

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.