Important: v403r11 is a version. Always match your DVR/NVR mainboard version.
: Authoritative firmware files for XMEYE-compatible devices are often hosted on manufacturer sites like or through general support hubs like Updating Your DVR/NVR You can update your device using two primary methods: Method 1: USB Flash Drive (Local Update) V4.02.R11 H.264/H.265 DVR/NVR Firmware Download v403r11 h264 h265 dvr nvr firmware download hot upd