nba2k1 50hz on pal dc

Regrettably, nba2k1 runs at 50hz on pal dc. i've used a hex editor to search for the usual string to change to 60hz but it aint there. anyone know of a patch (i've checked dccopyworld & gamefreax) or what i need to change using the hex editor?

[Musambani]

Hi, I'm very happy because I find a alternative solution.
Try to use Gameshark CDX.
Start Gameshark CDX. Use the option "start game without codes",
put NBA 2k1 disc, and... it works a 60hz...

Happy new year!