Shot in the dark here since most of you guys probably aren't running a goofball setup. I've been running a few hikvision cameras on a dahua nvr, worked great along with motion detection. I upgraded most cameras to 5.3.0 firmware and they've been working fine until I removed 2 and put them back, not the nvr doesn't recognize them. I have full access on from the web gui and the nvr sees them from the remote device screen but when I add them they don't connect. I removed one of my other cameras still running 5.1 firmware and it connects back just fine. Anyone know if 5.3.0 login screwed this up. IP address and password are correct. I'll have to pull one down and try to downgrade to test the theory out unless anyone has an idea.