i have just upgraded to BT Infinity FTTC and my 2830 connects fine but upnp wont work anymore please can some one help me?

I suggest you change the title of your post to something more informative then maybe someone will chime in with some suggestions. "Help with my 2830vn plus" doesn't give any clues to what your problem is and most people will probably just pass it by.

Furthermore you need to give some more info - what are the symptoms of upnp not working any more? That is, what are you trying to do that is not working now that did work before. Don't assume that people on here have ESP!

Make sure that UPnP is enabled on the router. go to the Application\UPnP page and enable it if it isnt already enabled.

If this option isn't shown; make sure that you're logged in using the admin/admin username/profile.