Downloading and installing firmware is not just about having the "latest" version; it is about functionality and protection.

Downloading the wrong firmware can "brick" your device (render it unusable). You must match the embedded in your current version string. Log in to your DVR/NVR. Navigate to [System Info] > [Version] .

: This firmware is associated with manufacturers like Xiongmai (XM) and is used by various white-label brands.

Always checksum your download. A high-quality firmware file will have a published MD5 hash. Never interrupt the update process.

a3f7c9e2d1b... (for v402r11_hq.bin )