Based on the specific filename structure v402r11, this firmware is typically associated with XMeye-based DVR/NVR systems (often marketed under brands like XMEye, Anran, Jooan, Sansco, Zosi, or generic unbranded Chinese systems).
This specific firmware line brought a major turning point for video surveillance: v402r11 h264 h265 dvr nvr firmware download exclusive
Verdict:
If your device’s sticker says V402R11 or you have an unbranded NVR using Hi3520/3531 chipsets, grab this firmware. It’s rare to find a clean, ad-free, malware-scanned package these days. Just follow the PDF guide included – don’t skip the config backup step. Based on the specific filename structure v402r11 ,
Specifically designed for Hisilicon processors like Hi3520D, Hi3521A, Hi3535, and Hi3536. How to Identify Your Correct Firmware Version Just follow the PDF guide included – don’t
firmware is a specialized system update designed for generic and OEM security recorders—including DVRs and NVRs—running on Hisilicon SoC