I only tried it on a couple titles, and they worked. I do recall there being a limitation, accessing menus, no fast forward, something like that. I have a hardware hack for my Oppo, so that's what I use.The key sequence hack doesn't work on all non-Region A titles, unfortunately. Apparently it's dependant on the authoring of the disc. Region B Studio Canal releases, for example, are problematic. In other words, it's a crap shoot.