Firmware

DH_NVR4x-4KS3_MultiLang_V4.006.0000000.2.R.250811.zip

Dahua firmware released Aug 11, 2025. Encrypted firmware.

Released: Aug 11, 2025
Version: V4.006.0000000.2.R
Size: 69.5 MB
Hardware: Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: c21cc70c56c36dfa3608f1fbd80ec460
SHA-256: ac01568717d53f55d965fa224950702378184d30c61534b605e804fd5fd47483

Where it's published

Mirrored by
Dahua
files.dahuatech.support
Mirror
Sold as
- _NVR4x-4KS3
- Folder: Recorders/NVR/_NVR4x-4KS3
V4.006.0000000.2.R · Listed date Aug 11, 2025
Mirror link (files.dahuatech.support)

Compatible hardware

This firmware is encrypted (the format Dahua uses for NVR4/NVR5 EI and XI builds), so its contents, including its list of supported hardware, can't be read. Use the model names the vendors list for it instead.