SADP does not see any ip addresses for them.
Did SADP work OK before the 'upgrade? Just to be sure SADP is installed and working OK.
What firmware and for what model did you use for the 'upgrade', presumably via the web GUI?
It's unusual that SADP does not see the cameras.
Here is a suggestion to try, first for the older camera bootloader versions:
Set the PC IP address to 192.0.0.128
Ensure the PC is wired to a port on the switch/router.
Ensure just one of the cameras is wired to the same switch/router as the PC is wired to.
Power off the camera.
At a PC command prompt, type ping -t 192.0.0.64
Power on the camera, and check for any ping responses.
Normal would be 2 or 3 only, a few seconds after power up, not repeating after a few 10s of seconds.
Then repeat for the newer camera bootloader versions:
Set the PC IP address to 192.168.1.128
Ensure the PC is wired to a port on the switch/router.
Ensure just one of the cameras is wired to the same switch/router as the PC is wired to.
Power off the camera.
At a PC command prompt, type ping -t 192.168.1.64
Power on the camera, and check for any ping responses.
Normal would be 2 or 3 only, a few seconds after power up, not repeating after a few 10s of seconds.
Repeat for the other camera.
If you do get a response at all, the camera is still working, but likely changing to an as yet unknown IP address. Normally, SADP would find it.
If you do get a continuous response, the camera is still working, and browser access should be possible at the responding IP address and with SADP.