Firmware

DH_NVR4x-EI_MultiLang_V4.005.0000001.2.R.250707.zip

Dahua firmware released Jul 7, 2025. Encrypted firmware.

Released: Jul 7, 2025
Version: V4.005.0000001.2.R
Size: 104.9 MB
Hardware: Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: d534686f1b188a0025e7c4d4f289e0ba
SHA-256: 2df0f4a1be765a8c713fac93c79029808dff0cce966d9abc9094090b4996eeb2

Where it's published

Mirrored by
Dahua
files.dahuatech.support
Mirror
Series: _NVR4xxx-EI
- Folder: Recorders/NVR/_NVR4xxx-EI/old
V4.005.0000001.2.R · Listed date Jul 7, 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.