Is there a action replay code to get jarachi on platinum?

Answer 1

you can use Pokemon modifier here is the code and how to use it:

Wild Pokemon Modifier

94000130 FDFF0000

B21C4D28 00000000

B0000004 00000000

94000130 FEFF0000

00000890 01ED0001

D0000000 00000000

DA000000 00000892

DC000000 00024620

C0000000 0000000B

D7000000 00000000

DC000000 00000006

D2000000 00000000

--EXAMPLE--

1. Press L+R at the inventory screen, then you'll get 493 Masterballs.

2. Set Masterballs' quantity to the Pokemon number you want.

3. Hold L and encounter Pokemon.

i.e. When you want Mew, discard 342 Masterballs