I have four 2mp Dahua SD22204T-GN ptz cameras that have been lost (password) with an NVR factory reset and can't get into them either via a Poe not any other way as they have switched IP address to 10.*.*.* and the IP of the NVR is 192.*.*.*. I can see them and can try and connect via config tool but the passwords are invalid and I cannot dial into them. Is there any other way other than actually hard resetting each camera via the mobo? Any help would be so grateful, I have spent two days on them.