No no, you can't run software on your NVR. SADP runs on your computer. You plug your computer into your NVR (or camera with 12v power supply) and it will find it's IP address. You can then change it.
You can't fix this unless you have all of the following i) Physical presence of the camera and NVR, ii) A Windows PC that you can connect to one of the NVR PoE ports, iii) Either SADP or the willingness to change the IP settings of your computer in order to find your camera.
1) Plug computer into NVR PoE port
2) Run SADP on computer
3) It will find camera, change IP address to 192.168.254.30
4) See if NVR can now find the camera, if not, manually add 192.168.254.30