I have 3 NVRs. Model DHI-NVR5864-4KS2. one of them has a hardware version v1.0, and the other two have a hardware version v2.0
First updated NVR with hardware version v1.0
from 3.215 to V3.216.0000006.0.R.20190223 - OK
from V3.216.0000006.0.R.20190223 to V4.000.0000000.1.R.20190809 - OK
from...