Code Lyoko cheats and cheat codes for Nintendo DS

Unlock all combos, max money, upgrades, refill health, and power rejuvenation:
Go to the 3D game section. Pause the game play by pressing Start then press 
Up, Up, Down, Down, Left, Right, Left, Right, B, A, Start. 
 
Evil Ulrich:
Hold L + R and press Up, Left, Right, Y, X at the profile selection screen.. 

Web content:
Use the following passwords on the game's official website at 
http://www.codelyoko.com to view concept art and videos.

These passwords are obtained during game play by completing the block puzzles 
in Hacking mode. 

Passwords - Bonus web content:
2F6U - Ice sketch
3D4W - Scorpion wallpaper
3Q4L - Overbike video
4B2Y  - Yumi fight video
4M9P - Fight Video (Ulrich, Yumi and Scorpion combined)
5J9R - Sector 5 sketch
5R5K - FMV Ending
6G7T - Desert sketch
7E5V - Mountain sketch
8C3X - Forest sketch
8N2N - Overwing video
8P3M - Overboard video
9A9Z - Ulrich fight video
9H8S - Scorpion video
9L8Q - Dark Enemies wallpaper

Upgrade order:
First get the LP upgrade, then Double Attack, then Double Defense.