Firmware

General_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: 104.7 MB
Hardware: Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5: bf2efa41bdee3ac5bbb1f01665258741
SHA-256: 05d2443f59b93fd4d56c055d6d17e988a2da497add8be6638446cfa1cdcfa7d6

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.