How can I unlock Samsung HT-H4500R - Samsung Televison & Video

1) Turn on the player with no disc in the tray.
2) Open then close the tray, wait to see the No-Disc Message
in the top Left Corner.
3) Now press the REPEAT button on the remote, followed by a
five digit code. eg. 57538 if you have a region 2 player.
4) When it works a 2 (your current region) will appear in
the top left corner.
5) Press 9 to make it region less.
6) Press Eject to OPEN to open the disc tray.
7) Press Eject to CLOSE to close the disc tray.
8) Power the unit off
9) Now power the unit on again, it should now read all
regions of DVD/BD Disc.

Here is a list of all the region codes:

R1 - 29334
R2 - 57538
R3 - 56732
R4 - 76884
R5 - 53814