This is the remote hack NAD L55
steps to follow (1) no dvd in player (2) power machine up (3) press the pause button (4) press 314159 "on display you see the region code of the machine" (5) press 0 (6) power machine off (7) power machine up
all these steps must be without stops.
Use at own risk, My L55 is region free and work great.