Installing the wrong firmware can permanently "brick" your device, making it unable to boot. Before downloading, you must identify your specific version ID.
If you mix and match camera brands, ONVIF compatibility is essential. The V4.02.r11 update resolves common handshake bugs, allowing your NVR to successfully discover, configure, and receive motion alerts from third-party IP cameras. Where to Safely Download V4.02.r11 Firmware V4.02.r11 H.264 H.265 Dvr Nvr Firmware Download
Before upgrading your DVR or NVR system to the V4.02.r11 firmware, make sure to: Installing the wrong firmware can permanently "brick" your
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The next five digits ( 31095 ) match the exact silicon board layout, processing chip (SoC), and video input matrix.
The V4.02.r11 package is a firmware release intended for digital video recorders (DVRs) and network video recorders (NVRs) that support H.264 and H.265 (HEVC) video codecs. The firmware aims to:
: The system will reboot. Do not power off the device during this process, or you may "brick" the unit. Common Default Credentials