Unlock All Boarders: 
To unlock all of the boarders, you must spin the right analog stick counter-clockwise a total of 15 times at the main menu. 

Level Select:
Press X(4), B(4), Y(4), X, B, Y at the main menu. A message will confirm correct code entry. 

Unlock Second and Third Boards:
To unlock the second and third boards press: U, U, L, L, R, R, D, D, U, L, R, D, U, L, R, D at the main menu.