I tried the IP for the original camera and it seems to be back. Sorry about that - it seems that it didn't allow me to access it because it was being reset after the upgrade.
The image looks blurrier after the upgrade. I'm going to do some research to make sure that this firmware was not incorrectly applied.
I used Andy's latest file, but the camera was not listed, and now I am not sure what happened. Don't want to factory reset as it was a pain for me to set it up in the first place and I'm not confident I remember how to change all the IP addresses again.