This means the Hardware ID in the V402R11 file does not match your motherboard. Do not force the update.
(Common for 8-channel NVRs)
(Common for 4-channel Hybrid DVRs) Where to Download v402r11 h264 h265 dvr nvr firmware download exclusive
After updating, you may need to delete and re-add your device in the XMeye/iCSee app to refresh the new handshake protocols. Conclusion This means the Hardware ID in the V402R11