Summary: I was fortunate to have found this unit of Amazon at a ridiculously low price, considering the average cost of this Sony model plus the modification that converts it into an all-region player. The machine does everything it's supposed to, playing foreign and domestic discs flawlessly...though when the player arrived it fell far short of that.
Summary: First off, DO NOT do any firmware updates unless specifically told to do so by the company that made this player multi-region. The player worked for me as advertised. Plays both Region B and Region 2 discs, Make sure you find the little cheat sheet that is packed in the box for changing regions. I did a firmware update, which caused the player to completely loose SD multi-region function. Blu-Ray Region B still played.
Summary: BDP-S5100 Multi Region Blu Ray Player: I bought this player in Dec 2013, and am completely satisfied with it - easy to use, great performance, easily earns a 5* rating. I am sorry to see all the inaccurate information here, especially in the 1* reviews. Apparently, many people do not understand what this product is. This is a standard Sony player that has had firmware and hardware modifications by a third party to add functions.
Summary: Shipped quickly. Easy to set up. I prefer Panasonic products but this Sony set up easily. I popped in one of m y favorite Region 2 DVD's and everything worked perfectly. I don't do on-line downloads, but as I noted, everything set up easily so I think streaming would work well. Thanks Bombay Electronics.