Maybe try these steps for Game of Thrones problems
I couldn't comment about problems with updating firmware, but for those people who've experienced an issue playing Game of Thrones Season 1 on blu-ray, please see my post in this other thread, with workaround steps which so far seem to work for me. I own a Philips BDP3000, but it might be the same issue or a similar in the BDP3100.
As far as I can tell from my own experience, it's something to do with the auto-play sequence which causes the player to lock up, and I'd be interested to know if anyone can replicate the success I've had. I don't have a clue what this might have to do with the blu-ray standard or Philips not having it, but if the workaround is reliable then maybe it'll help Philips to nail a possible firmware bug.