Well Greg,
As you can post here, you obviously to have an internet connection to your home.
However the "web interface" to your BB1 is made BY your BB1 it is not outside your home (so it is just you).
I think you need to check that your BB1 is connected to your WiFi properly (are you seeing an IP number).
If it is, try doing a power off and on with your router.
I think that when you get tour BB1 reconnected to your router, you will find that a "Web Upgrade" will work OK.
Fred