Firmware
DH_NVR4x-4KS2L_MultiLang_V4.002.0000000.6.R.231009.zip
CCTV App firmware released Oct 9, 2023. May work with 1 device.
- Released
- Oct 9, 2023
- Version
- V4.002.0000000.6.R
- Size
- 123.0 MB
- Hardware
- 1 device
Download
Permanent copy on the Internet Archive (item page)
- MD5
2655c872cbadfd4cbf615975c2c019df- SHA-256
fe65358d8ea5821d1dc6e728dc28fbedb6903800ea40a8ec0cdf906efeb28282
Where it's published
Recovered from the Wayback Machine
CCTV App
Wayback Machine (files.cctvapp.net)
Wayback copyCaptured Dec 30, 2025 from
https://files.cctvapp.net/Firmware/Dahua/Network-Recoder/NVR/NVR-S2/NVR4XXX-4KS2-L/DH_NVR4x-4KS2L_MultiLang_V4.002.0000000.6.R.231009.zip- Recovered from the Wayback Machine (captured 2025-12-30)
V4.002.0000000.6.R · Listed date Oct 9, 2023
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_NVR4x-4KS2L_MultiLang_V4.002.0000000.6.R.231009.bin: the installer script's board checks, 2 IDs
Technical details
Read from inside the firmware (zip archive). This file bundles 2 firmware images.
Firmware image
- Architecture
- arm
- Image dates
- Oct 9, 2023
- Security
- Not signed
Flash layout: 4 partitions, 4 written by this firmware
From the image headers (only partitions this firmware writes).
| Partition | Start | End | Size | Image | Filesystem | Built |
|---|---|---|---|---|---|---|
| u-boot | 0xa0140000 | 0xa0540000 | 4.0 MB | u-boot.bin.img | — | 2023-10-09 |
| custom | 0xa3780000 | 0xa3980000 | 2.0 MB | custom-x.squashfs.img | squashfs | 2023-10-09 |
| web | 0xa3980000 | 0xa4880000 | 15.0 MB | web-x.squashfs.img | squashfs | 2023-10-09 |
| logo | 0xa4880000 | 0xa4a80000 | 2.0 MB | logo-x.squashfs.img | squashfs | 2023-10-09 |
DH_NVR4x-4KS2L_MultiLang_V4.002.0000000.6.R.231009.bin
- Architecture
- arm
- Flash
- 128.0 MB
- Image dates
- Oct 9, 2023
- Security
- Signed, upgrade security version 3.00
Flash layout: 11 partitions, 7 written by this firmware
From the recorder's Install.lua partition table.
| Partition | Start | End | Size | Image | Filesystem | Built |
|---|---|---|---|---|---|---|
| param | 0x0 | 0x140000 | 1.3 MB | param.bin.img | — | 2023-10-09 |
| boot | 0x140000 | 0x540000 | 4.0 MB | u-boot.bin.img | — | 2023-10-09 |
| env | 0x540000 | 0x740000 | 2.0 MB | not written | — | — |
| romfs | 0x740000 | 0x3780000 | 48.3 MB | romfs-x.squashfs.img | squashfs | 2023-10-09 |
| custom | 0x3780000 | 0x3980000 | 2.0 MB | custom-x.squashfs.img | squashfs | 2023-10-09 |
| web | 0x3980000 | 0x4880000 | 15.0 MB | minios-x.squashfs.img | squashfs | 2023-10-09 |
| logo | 0x4880000 | 0x4a80000 | 2.0 MB | logo-x.squashfs.img | squashfs | 2023-10-09 |
| dgs | 0x4a80000 | 0x4b00000 | 512.0 KB | not written | — | — |
| ext_usr | 0x4b00000 | 0x7400000 | 41.0 MB | eusr-x.squashfs.img | squashfs | 2023-10-09 |
| config_fw | 0x7400000 | 0x7600000 | 2.0 MB | not written | — | — |
| config | 0x7600000 | 0x8000000 | 10.0 MB | not written | — | — |
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