Here are the codes for pokemon black version 2, enjoy guys!
taken from CMP Cheat DB π
Pokemon Black Version 2 (E/U)
Game ID : IREOΒ 8E4C1CD6
Emulator User (desmume/No$GBA): Warning!! some codes cannot be disabled even though you uncheck or remove the code from the list, you’ll need to save after use code and then restart the emulator.