If you still cannot find it, contact directly and provide:
Plug the prepared USB flash drive into one of the available USB ports on your DH-XVR4A08. dh-xvr4a08 firmware download
Check that all 8 channels are rendering video properly and that audio or motion detection rules are functioning as intended. If you still cannot find it, contact directly
If you still cannot find it, contact directly and provide:
Plug the prepared USB flash drive into one of the available USB ports on your DH-XVR4A08.
Check that all 8 channels are rendering video properly and that audio or motion detection rules are functioning as intended.