Firmware

General_NVR4x-EI_MultiLang_V4.005.0000001.4.R.250818.zip

Dahua firmware released Aug 18, 2025. Encrypted firmware.

Released: Aug 18, 2025
Version: V4.005.0000001.4.R
Size: 103.5 MB
Hardware: Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: 70927c33556bedaf00d494a195785ecd
SHA-256: 32ba0367ef8d80465abe39c44dfee0afb0709445a842c72b3600bfc3d471c646

Where it's published

Mirrored by
Dahua
files.dahuatech.support
Mirror
Series: _NVR4xxx-EI
- Folder: Recorders/NVR/_NVR4xxx-EI/old
V4.005.0000001.4.R · Listed date Aug 18, 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.