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Firmware

DH_SD-Kant-Dual_MultiLang_PN_V2.820.0000029.0.R.260115.zip

Dahua firmware released Feb 28, 2026. May work with 7 devices, including SDT3A200-2F-NB-0400-A, SDT3A200-2F-NB-0400-B, SDT3A200-2F-NB1-0400-A.

Released
Feb 28, 2026
Version
V2.820.0000029.0.R
Size
31.9 MB
Hardware
7 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
19e0ac705de55cc54f166c811d640aaa
SHA-256
f8a50b777a1a85866505573f62a2ab45699278b72ce4718bea668c13b12c2ea9
Changelog
Release notes

Where it's published

Compatible hardware

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

Where these IDs come from
  • hwid in DH_SD-Kant-Dual_MultiLang_PN_V2.820.0000029.0.R.260115.bin: the device's own hardware check list, 7 IDs
  • Install in DH_SD-Kant-Dual_MultiLang_PN_V2.820.0000029.0.R.260115.bin: the installer's device list (board families), 1 ID, vendor General (not counted: a more specific list exists)
  • check.img in DH_SD-Kant-Dual_MultiLang_PN_V2.820.0000029.0.R.260115.bin: the device's own hardware check list, 7 IDs

Technical details

Read from inside the firmware (zip archive).

SoC
SigmaStar Infinity6C
Architecture
arm
OEM build
General
Flash
128.0 MB
Image dates
Jan 15, 2026
Security
Signed, encrypted, security baseline V2.4
Language & video
English by default · 4 languages · PAL
Software version
V2.820.0000029.0.R.260115
Supported languages (4)

English, Arabic, SpanishEU, Thai

Flash layout: 22 partitions, 9 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
mini-Boot0x00x1400001.3 MBnot written——
IPL0x1400000x1a0000384.0 KBIPL.bin.img—2026-01-15
IPL_CUST0x1a00000x200000384.0 KBIPL_CUST.bin.img—2026-01-15
U-Boot0x2000000x3000001.0 MBdhboot.bin.img—2026-01-15
smc0x3000000x4000001.0 MBnot written——
dgs0x4000000x5000001.0 MBnot written——
hwid0x5000000x5c0000768.0 KBnot written——
syslog0x6000000xa000004.0 MBnot writtenubi—
config0xa000000xe000004.0 MBnot writtenubi—
backup0xe000000x12000004.0 MBnot writtenubi—
devconfig0x12000000x16000004.0 MBnot writtenubi—
updateflag0x16000000x17000001.0 MBnot written——
dtb(ro)0x17000000x18000001.0 MBdhdtb.bin.img—2026-01-15
backdtb(ro)0x18000000x19000001.0 MBdhdtb-bak.bin.img—2026-01-15
lens0x19000000x1a000001.0 MBnot written——
Kernel0x1a000000x1e000004.0 MBkernel.img—2026-01-15
romfs(ro)0x1e000000x320000020.0 MBromfs-x.squashfs.imgsquashfs2026-01-15
web(ro)0x32000000x3e0000012.0 MBweb-x.squashfs.imgsquashfs2026-01-15
firmware(ro)0x3e000000x5c0000030.0 MBfirmware-x.squashfs.imgsquashfs2026-01-15
backweb(ro)0x5c000000x680000012.0 MBnot written——
backromfs(ro)0x68000000x7c0000020.0 MBnot written——
backkernel0x7c000000x80000004.0 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 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.