I got this firmware URL from Dahua Support for my DHI-NVR4216-I because of issues with the firmware it was shipped with.
DH_NVR4XXX-I_MultiLang_V4.001.0000000.0.R.200622.bin
Also learned Dahua require using IE browser for full functionality of the web UI...
DH_NVR4XXX-I_MultiLang_V4.001.0000000.0.R.200622.bin
Also learned Dahua require using IE browser for full functionality of the web UI...