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Firmware

DH_NVR4x-EI_MultiLang_V4.005.0000001.6.R.251219.zip

Dahua firmware released Dec 19, 2025. Encrypted firmware.

Released
Dec 19, 2025
Version
V4.005.0000001.6.R
Size
103.7 MB
Hardware
Encrypted firmware

Download

Download firmware

Permanent copy on the Internet Archive (item page)

MD5
66387536de833399bda7b62792ea5030
SHA-256
8a598b09f03a62fa6a718bb0456e86a2bd1fd32ce59797212d0eed9daa712b5b
Changelog
Release notes

Where it's published

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.