DVD Region-Free is an unique, effective and easy-to-use DVD tweaking too that allows you to watch all region DVDs on any DVD drive(especially RPC2) even if it has been locked.
You don't need flash firmware which is sometimes dangerous, useless or unavailable.
DVD Region-Free also disable region check for popular software-based DVD players such as PowerDVD, WinDVD and CinePlayer.
More info:
hxx//www.dvdidle.com/