Well, i found a SID code:
5216F4CC 98087128
0216F4D0 F9FAF699
94000130 FDFF0000
0216F4D0 0C006900
D2000000 00000000
Just hold L when you load your trainer card, release L when you see your trainer card and then flip it. (I didn't create the code, just found it, all credits to who made it ^^)
Btw, it's worth mentioning that the codes for black and white are the same as are the codes for US/EU games.