Network information through Gamefirst reports a subnet mask of 0.0.0.0 which is incorrect and may be the reason why it's no longer working. Rolling back firmware is the only way to get it to work again.
I was finally able to track down the issue. I found out the hard way through trial and error that Gamefirst needs UPNP to work. Once UPNP was enabled I was able to get Gamefirst to see my router.
