I've seen the issue with this disk and a few others that apparently is due to the menus being "more complex" than normal. THe player freezes and won't play any of the extras. I was hoping the 620 firmware would help but it hasn't solved the problem.
A google search suggests other sony players have a similar problem.
The disk works perfectly on my PC using power dvd.
As you may have already read on similar problem's like this in the past Sony have suggested that you install the latest firmware, which you have done, & also do a factory reset..
If you still have the disc could you try a factory reset of your S480 please, then if the The fringe disk's still does not play could you supply as much details as you can from the DVD/BD disk please, type of disc BD or DVD (retail or rental), region code, releasing studio, version, etc. so that I can pass it onto Sony in the hope that they can find a solution..