Help changing the Shiny rate of my .NDS white 2 file.

[KingKylan]

I downloaded crystaltile2 and opened my white 2 file into it but I cant find how to get to the arm9 file and the offset that i saw on a different thread i couldnt find either. 

[Gonhex]

Load the ROM and click on that icon that looks like a Nintendo DS in CrystalTyle2. It will open a list with all the files. Right click on arm9.bin and decompress it (I think it is called something like extract there (?)). Open the decompressed file in an HEX-editor to edit it.

The shiny rate should be at offset 0x18E1C if it is a european language, but better search for the byte sequence in that region (see here).

Now you can insert the modified arm9.bin.