A New version of FinalBurn Alpha for the XBOX has been released, heres the info :

Fixed black screen in kof2003/kof2003d

Fixed samsho5.

Fixed diagnostics mode and dipswitch settings in kof2k2nd. (P1 was incorrect)

Note: You may need to delete your savegame and/or the kof2k2 files in the /cfg folder if you find your kof2k2nd dipswitch settings are still messed up. Alternatively you can enter diagnostics mode and set them yourself.

More info --> here