Cheat Menu
After pausing the game, hold L2 + R2 + Triangle + Square + X. Continue to hold these buttons and a Cheat Menu will be displayed. Press Up or Down to scroll through the cheats and press L1 or L2 to toggle them.

Perfect "created player"
Enter the create a player screen. After you enter the name of your player go to the player stats screen. Go down to overall and put it as far up as you can. Then, pick 5 or more stats other than overall and put them to the least amount they can be. Then, go back to overall and put it as far up as you can. Do this over and over until everything is 99, then do it one more time for more points then go up and change your dunk and shot percents.