well I'm just curious, but is there any possibility that you (or anyone else(or me)) can let pal park work with the english gba games?
It is very easy: Go to offset 0039C168 in a platinum rom, there is a list of serials there that look like this:
Code:
AXVJ....AXVE....AXVF....AXVD....AXVS....AXVI....
AXPJ....AXPE....AXPF....AXPD....AXPS....AXPI....
BPRJ....BPRE....BPRF....BPRD....BPRS....BPRI....
BPGJ....BPGE....BPGF....BPGD....BPGS....BPGI....
BPEJ....BPEE....BPEF....BPED....BPES....BPEI....
Each of those serials are from a GBA game and the game uses them to recognize the inserted game in order to trigger the wild pokemon of each version. Now, only the first serial in each row is able to trigger pal park (note that they end in -J meaning Japan), if you swap them with another serial you will be able to trigger pal park with a gba game from another region (E=English, F=French, D=German, S=Spanish, I=Italian)
IE: If you want to use english games:
CODEAXVE....AXVJ....AXVF....AXVD....AXVS....AXVI....
AXPE....AXPJ....AXPF....AXPD....AXPS....AXPI....
BPRE....BPRJ....BPRF....BPRD....BPRS....BPRI....
BPGE....BPGJ....BPGF....BPGD....BPGS....BPGI....
BPEE....BPEJ....BPEF....BPED....BPES....BPEI....