Harry Potter and the Half-Blood Prince PSP Cheat Codes

In Harry Potter and the Half-Blood Prince PSP game, Harry Potter returns to Hogwarts on his sixth year.
Get a chance to play exciting wizard duels, brew potions during potions class and play Quidditch with the Gryffindor Qudditch team. For all Harry Potter fans, this game is a must.
Here are Harry Potter and the Half-Blood Prince PSP Game Cheats, tips and tricks:
To unlock the Castle Gates – Multi-player Dueling Area, open the Rewards menu and press the following codes:
RIGHT, RIGHT, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, LEFT, RIGHT START
When the lock gates are being blocked by shields, break it by using the Wingardium Leviosa spell. Lift the broken pieces and repair them to get a shield.
In the Hogwarts Crest Quest, get hidden crests around Hogwarts go get the following rewards:
3 Crests – You get a dueling pack – Draco & Luna
8 Crests – You get more health in wizard duels
14 Crests – You get a dueling pack – Training Ground Dueling Arena
21 Crests – You get dungbombs inside prank boxes
29 Crests – You get a dueling pack – Crabbe & Goyle
38 Crests – Your score boosts in flying events
48 Crests – You get an exploding cauldrons inside prank boxes
59 Crests – You get dueling pack – Transfiguration Dueling Arena
71 Crests – You get maximum health in wizard duels
84 Crests – You get a dueling pack – Ginny & Hermione
98 Crests – You get a love Potion found in Potions Club
113 Crests – You get dueling pack – Paved Courtyard Dueling Arena
129 Crests – You get more mini crests in every cast
150 Crests – You get dueling Pack – Snape
You can get extra crests after finishing the place. Look for firework boxes around Hogwarts. If you burn these using Incendio, a broken crest will appear. Repair it using Reparo and take it.
Have fun trying out these Harry Potter and the Half-Blood Prince PSP cheat codes!
I know I can brew potions in the potions class, but how do I get there?