Firmware
DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000004.1.R.250811.zip
Dahua firmware released Aug 20, 2025. May work with 1 device.
- Released
- Aug 20, 2025
- Version
- V4.001.0000004.1.R
- Size
- 55.6 MB
- Hardware
- 1 device
Download
Permanent copy on the Internet Archive (item page)
- MD5
e2ba4588983aaa501ef7c47ddc88aa3b- SHA-256
fd9abecedae8fb12f122c48bbaf938d24ec8ef93040eb93efe5172fe85984e1e- Changelog
- Release notes
Where it's published
Available from
Dahua
Dahua Download Center
CurrentV4.001.0000004.1.R · Listed date Aug 20, 2025
Compatible hardware
Hardware IDs this firmware's installer accepts (1 device). Names with placeholders such as x or XXX are board families.
Where these IDs come from
- Install.lua in DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000004.1.R.250811.bin: the installer script's board checks, 2 IDs
Technical details
Read from inside the firmware (zip archive).
- SoC
- HiSilicon: one of Hi3536, Hi3536C
- Architecture
- arm
- Bootloader
- U-Boot 2010.06-svn4868
- Flash
- 128.0 MB
- Image dates
- Aug 11, 2025
- Security
- Signed, security baseline V1.4, upgrade security version V2.0
Flash layout: 12 partitions, 6 written by this firmware
From the recorder's Install.lua partition table.
| Partition | Start | End | Size | Image | Filesystem | Built |
|---|---|---|---|---|---|---|
| boot | 0x0 | 0x300000 | 3.0 MB | u-boot.bin.img | — | 2025-08-11 |
| env | 0x300000 | 0x500000 | 2.0 MB | not written | — | — |
| uImage | 0x500000 | 0xf00000 | 10.0 MB | uImage.img | — | 2025-08-11 |
| rootfs | 0xf00000 | 0x4500000 | 54.0 MB | romfs-x.squashfs.img | squashfs | 2025-08-11 |
| web | 0x4500000 | 0x4f00000 | 10.0 MB | web-x.squashfs.img | squashfs | 2025-08-11 |
| custom | 0x4f00000 | 0x5100000 | 2.0 MB | custom-x.squashfs.img | squashfs | 2025-08-11 |
| logo | 0x5100000 | 0x5400000 | 3.0 MB | logo-x.squashfs.img | squashfs | 2025-08-11 |
| logs | 0x5400000 | 0x5a00000 | 6.0 MB | not written | — | — |
| config | 0x5a00000 | 0x6400000 | 10.0 MB | not written | — | — |
| extend1 | 0x6400000 | 0x6c00000 | 8.0 MB | not written | — | — |
| backup | 0x6c00000 | 0x7800000 | 12.0 MB | not written | — | — |
| extend2 | 0x7800000 | 0x8000000 | 8.0 MB | not 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 V1.4 may refuse this file, and after installing it you may not be able to downgrade to firmware with a lower baseline.
Related firmware
Other files for much of the same hardware, from any vendor.
- DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000004.0.R.240808.bin
Released Aug 8, 2024 · V4.001.0000004.0.R · 1 device · Dahua
- General_NVR2XXX-W-4KS2_MultiLang_V4.001.0000004.0.R.240808.bin
Released Aug 8, 2024 · V4.001.0000004.0.R · 1 device · Dahua
- DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.2.R.220901.zip
Released Nov 1, 2022 · V4.001.0000003.2.R · 1 device · Dahua
- DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.2.R.220901.bin
Released Sep 1, 2022 · V4.001.0000003.2.R · 1 device · Dahua
- NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.2.R.220901.zip
Released Sep 1, 2022 · V4.001.0000003.2.R · 1 device · Eltrox
- DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.1.R.210709.bin
Released Jul 9, 2021 · V4.001.0000003.1.R · 1 device · Dahua
- NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.1.R.210709.zip
Released Jul 9, 2021 · V4.001.0000003.1.R · 1 device · Eltrox
- DH_NVR2XXX-W-4KS2_MultiLang_V4.001.0000003.1.R.200813.bin
Released Aug 13, 2020 · V4.001.0000003.1.R · 1 device · Dahua