NVR won't boot;
We have update our NVR "DS-7616NI-SE, SF Version: V2.3.7_131112" with a USA version, It worked fine.
When we tried to update the NVR with the old version, the NVR shows the first windows and then fail to boot.
We have tried to use TFTP to access the NVR, the NVR is not...