MLB 08: The Show cheats and cheat codes for Sony PSP

Cheat Codes

Chet code for unlocking classic free agents:
While you are at the main menu, press Left, Right, Up, Left, Right, Up, Right,
Down to unlock classic free agents. You can access to them at the
"Player Movement" menu.

Silver Era and Golden Era teams:
While you are at the main menu, press Right, Up, Right, Down, Down, Left, Up,
Down to unlock all Silver Era and Golden Era teams.

Small heads cheat:
Press Start to pause game play, the press Left, Right, Down, Up, Right, Left,
Down, Left to activate small heads mode.

Big baseball cheat:
Press Start to pause game play, the press Right, Down, Up, Left, Right, Left,
Down, Up to activate big baseball mode.

Big heads cheat:
Press Start to pause game play, the press Right, Left, Down, Up, Left, Up,
Down, Left to activate big heads mode.

Better player:
Adjust all the sliders as you want in Road To The Show mode.
Your player will do very well and get promoted faster.