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Firmware

DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527.zip

Dahua firmware released May 27, 2026. May work with 10 devices, including VTH2421F, VTH2421FS-SH, VTH2421F_R.

Released
May 27, 2026
Version
V4.810.0000000.4.R
Size
39.2 MB
Hardware
10 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
77ec85204eb7a21ee2645163bd1088c4
SHA-256
e184294c66883ad6c12425ba39e26f0eb7c9f1c79e70307f9123a33210cb0f95
Changelog
Release notes

Where it's published

Compatible hardware

Hardware IDs this firmware's installer accepts (10 devices).

Where these IDs come from
  • Install in DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527_part1.bin: the installer's device list (board families), 10 IDs, vendor Dahua
  • Install in DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527_part2.bin: the installer's device list (board families), 10 IDs, vendor Dahua

Technical details

Read from inside the firmware (bundle of several firmwares). This file bundles 2 firmware images.

DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527_part1.bin

Architecture
arm
OEM build
Dahua
Bootloader
U-Boot 2011.09-rc1-svn9727
Flash
40.0 MB
Image dates
May 27, 2026
Security
Signed, security baseline V2.4
Language & video
English by default · 15 languages · PAL
Supported languages (15)

English, Turkey, Polish, Romanian, Hungarian, Finnish, Dansk, Czechish, Bulgaria, Slovakian, Slovenia, Greek, Serbian, Lithuanian, Latvian

Flash layout: 13 partitions, 9 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
boot00x00x40000256.0 KBboot0.bin.img—2026-05-27
boot0x400000x2800002.3 MBuboot.bin.img—2026-05-27
mbr0x2800000x2a0000128.0 KBmbr.img—2026-05-27
env0x2a00000x2c0000128.0 KBnot written——
updateflag0x2c00000x3c00001.0 MBnot written——
partition(ro)0x3c00000x4c00001.0 MBpartition-x.cramfs.imgcramfs2026-05-27
kernel0x4c00000x9c00005.0 MBkernel-x.cramfs.imgcramfs2026-05-27
romfs(ro)0x9c00000xec00005.0 MBnot writtencramfs—
logo(ro)0xec00000xee0000128.0 KBnot written——
web(ro)0xee00000x13e00005.0 MBweb-x.cramfs.imgcramfs2026-05-27
data(ro)0x13e00000x18e00005.0 MBdata-x.cramfs.imgcramfs2026-05-27
usr(ro)0x18e00000x27e000015.0 MBusr-x.cramfs.imgcramfs2026-05-27
pd(ro)0x27e00000x2800000128.0 KBpd-x.cramfs.imgcramfs2026-05-27

DH_VTHX421H_MultiLang_SIP_CEE-Nordic_V4.810.0000000.4.R.260527_part2.bin

Architecture
arm
OEM build
Dahua
Bootloader
U-Boot 2011.09-rc1-svn9727
Flash
40.0 MB
Image dates
May 27, 2026
Security
Signed, security baseline V2.4
Language & video
English by default · 15 languages · PAL
Supported languages (15)

English, Turkey, Polish, Romanian, Hungarian, Finnish, Dansk, Czechish, Bulgaria, Slovakian, Slovenia, Greek, Serbian, Lithuanian, Latvian

Flash layout: 13 partitions, 12 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
boot00x00x40000256.0 KBboot0.bin.img—2026-05-27
boot0x400000x2800002.3 MBuboot.bin.img—2026-05-27
mbr0x2800000x2a0000128.0 KBmbr.img—2026-05-27
env0x2a00000x2c0000128.0 KBenv-x.cramfs.imgcramfs2026-05-27
updateflag0x2c00000x3c00001.0 MBnot written——
partition(ro)0x3c00000x4c00001.0 MBpartition-x.cramfs.imgcramfs2026-05-27
kernel0x4c00000x9c00005.0 MBkernel-x.cramfs.imgcramfs2026-05-27
romfs(ro)0x9c00000xec00005.0 MBromfs-x.cramfs.imgsquashfs2026-05-27
logo(ro)0xec00000xee0000128.0 KBlogo-x.cramfs.imgcramfs2026-05-27
web(ro)0xee00000x13e00005.0 MBweb-x.cramfs.imgcramfs2026-05-27
data(ro)0x13e00000x18e00005.0 MBdata-x.cramfs.imgcramfs2026-05-27
usr(ro)0x18e00000x27e000015.0 MBusr-x.cramfs.imgcramfs2026-05-27
pd(ro)0x27e00000x2800000128.0 KBpd-x.cramfs.imgcramfs2026-05-27

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.