My Slingbox Pro was working, it did a systems update and now no longer works with the Comcast cable modem/router -- it had been working just fine. It is now connected to a Linksys WRT54G, but it still will not "configure" the router.
During the Wizard configuration, the Wizard recognizes a "PnP IGD Router", but then times out trying to "Identify Router". Locally, the Sling works as it always has. That will teach me to allow it to update itself... Is there any way of reflashing the firmware to an earlier release?
You can check the following links which shows some troubleshoot steps that can help you out.
Let us know how it works.