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Firmware

DH_SD-Gauss_MultiLang_PN_Stream3_V2.821.18LK000.0.R.230808.bin

Dahua firmware released Aug 8, 2023. May work with 12 devices, including CA-HZ2023DB-A, CA-HZ2025DB-A, CA-HZ2032DB-A.

Released
Aug 8, 2023
Version
V2.821.18LK000.0.R
Size
97.7 MB
Hardware
12 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
cab5f46cfe53867e04f20fdc9fedef89
SHA-256
b761cc133821d8757c1c1dcb06b402ceba64e26da269bfc4b12f240f6af61065

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (12 devices).

Where these IDs come from
  • hwid: the device's own hardware check list, 12 IDs
  • Install: the installer's device list (board families), 1 ID, vendor Dahua (not counted: a more specific list exists)
  • check.img: the device's own hardware check list, 12 IDs
  • hwid in check.bin: the device's own hardware check list, 12 IDs
  • Install in check.bin: the installer's device list (board families), 1 ID, vendor Dahua (not counted: a more specific list exists)
  • check.img in check.bin: the device's own hardware check list, 12 IDs

Technical details

Read from inside the firmware (dahua ptz package). This file bundles 2 firmware images.

Firmware image

SoC
Novatek NT98560
Architecture
arm
OEM build
Dahua
Bootloader
U-Boot 2019.04-svn10785
Image dates
Aug 8, 2023
Security
Signed, encrypted, security baseline V2.3
Language & video
English by default · 23 languages · PAL
Supported languages (23)

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

Flash layout: 11 partitions, 11 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
dtb0x400000x80000256.0 KBdhdtb.bin.img—2023-08-08
mini-boot0xc00000x140000512.0 KBdhboot-min.bin.img—2023-08-08
bootloader0x2400000x3400001.0 MBdhboot.bin.img—2023-08-08
rootfs0x18400000x3d4000037.0 MBromfs-x.squashfs.imgsquashfs2023-08-08
firmware0x3d400000x644000039.0 MBfirmware-x.squashfs.imgsquashfs2023-08-08
custom0x64400000x68400004.0 MBcustom-x.squashfs.imgsquashfs2023-08-08
kernel0x68400000x6c400004.0 MBkernel.img—2023-08-08
web0x6c400000x6f400003.0 MBkernel-aol.img—2023-08-08
web0x6c400000x7c4000016.0 MBweb-x.squashfs.imgsquashfs2023-08-08
web0x6f400000x7b4000012.0 MBrollback-aol.squashfs.imgsquashfs2023-08-08
pd0x7c400000x7f400003.0 MBpd-x.squashfs.imgsquashfs2023-08-08

check.bin

Architecture
arm
OEM build
Dahua
Image dates
Aug 8, 2023
Security
Signed, security baseline V2.3
Language & video
English by default · 23 languages · PAL
Supported languages (23)

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

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 V2.3 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.