Firmware

3341958_General_NVR2X-4KS3_MultiLang_V4.005.0000000.4.R.250812.zip

Dahua firmware released Aug 12, 2025. Encrypted firmware.

Released: Aug 12, 2025
Version: V4.005.0000000.4.R
Size: 65.7 MB
Hardware: Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: 6fef995bde39956341ba037d5437f3dd
SHA-256: 7dacf6abf7ad8330f47172418e374343bb9ad4ddccede51c1c11da4cd368b3bf

Where it's published

Mirrored by
Dahua
files.dahuatech.support
Mirror
Series: NVR2X-4KS3
- Folder: Recorders/NVR/NVR2X-4KS3
V4.005.0000000.4.R · Listed date Aug 12, 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.