Thing is, if you just want to
play DVD's, the players are so cheap these days it's worth having a punt at flashing the firmware on a new cheapo or one in the parts box. I was given a few Region 1 films and a spare player, so popped it into the case, held me breath, & flashed. It worked & I watched the movies. The DVD player is still
AFAIK working well in a bitsa machine I built for a neighbour - dunno where the movies are now.