I have burned my camera with the latest firmware (1.1.0) and the the long press on the side to get access to the config does not work by me either. But if I burn it with version 1.0.0 the long press works:
ab6e1815-ac1a-44af-b7bd-215ecdd804ad-image.png
However, if you can see an IP on the serial interface you have probably connected the camera to a network with a DHCP and you should be able to stream if your PC is connected to the same network.
But note that the urls are:
http://<CAM_IP>/stream for v 1.0.0.
and
http://<CAM_IP>/ for v 1.1.0.