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Firmware

DH_VTOX221E_MultiLang_PN_PAAS_SIP_EMEA_V4.600.0000000.4.R.250723.zip

Dahua firmware released Aug 20, 2025. May work with 7 devices, including VTO3221D, VTO3221E, VTO6221.

Released
Aug 20, 2025
Version
V4.600.0000000.4.R
Size
25.5 MB
Hardware
7 devices

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
83667261cde57787fdd6a446f79d4075
SHA-256
99543b38bda439b09d69369fdfdf81e41a8114fb47b1b51eff5b55c4605a3089
Changelog
Release notes

Where it's published

Compatible hardware

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

Where these IDs come from
  • Install in data-x.squashfs.bin: the installer's device list (board families), 7 IDs, vendor Dahua
  • hwid in DH_VTOX221E_MultiLang_PN_PAAS_SIP_EMEA_V4.600.0000000.4.R.250723.bin: the device's own hardware check list, 2 IDs
  • Install in DH_VTOX221E_MultiLang_PN_PAAS_SIP_EMEA_V4.600.0000000.4.R.250723.bin: the installer's device list (board families), 7 IDs, vendor Dahua (not counted: a more specific list exists)
  • check.img in DH_VTOX221E_MultiLang_PN_PAAS_SIP_EMEA_V4.600.0000000.4.R.250723.bin: the device's own hardware check list, 2 IDs

Technical details

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

data-x.squashfs.bin

Architecture
arm
OEM build
Dahua
Image dates
Jul 23, 2025
Security
Not signed, encrypted
Flash layout: 1 partition, 1 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
data0x1e000000x22000004.0 MBdata-x.squashfs.imgsquashfs2025-07-23

DH_VTOX221E_MultiLang_PN_PAAS_SIP_EMEA_V4.600.0000000.4.R.250723.bin

Architecture
arm
OEM build
Dahua
Flash
126.0 MB
Image dates
Jul 23, 2025
Security
Signed, security baseline V2.2
Language & video
English by default · 14 languages · PAL
Supported languages (14)

English, BritishEnglish, Italian, Spanish, Russian, French, German, Portuguese, Turkey, Dutch, Ukrainian, Arabic, SpanishEU, PortugalBR

Flash layout: 14 partitions, 9 written by this firmware

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

PartitionStartEndSizeImageFilesystemBuilt
U-Boot0x2000000x3000001.0 MBdhboot.bin.img—2025-07-23
hwid0x3000000x4000001.0 MBnot written——
updateflag0x4000000x5000001.0 MBnot written——
partition(ro)0x5000000x6000001.0 MBpartition-x.cramfs.imgcramfs2025-07-23
custom(ro)0x6000000x9800003.5 MBcustom-x.squashfs.imgsquashfs2025-07-23
product(ro)0x9800000xd000003.5 MBpd-x.squashfs.imgsquashfs2025-07-23
Kernel0xd000000x12000005.0 MBkernel.img—2025-07-23
romfs(ro)0x12000000x1a000008.0 MBromfs-x.squashfs.imgsquashfs2025-07-23
web(ro)0x1a000000x1e000004.0 MBweb-x.squashfs.imgsquashfs2025-07-23
data(ro)0x1e000000x22000004.0 MBdata-x.squashfs.imgsquashfs2025-07-23
user(ro)0x22000000x3b8000025.5 MBuser-x.squashfs.imgsquashfs2025-07-23
config0x72000000x76000004.0 MBnot writtenubi—
syslog0x76000000x7a000004.0 MBnot writtenubi—
backup0x7a000000x7e000004.0 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 V2.2 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.