When i modified my game to the W-2 castle at the boss room it completely freeze and stop working. I don't know why so here is a patch just for the level in level 1 of w 1. if i put a patch instead of a level it that i changed things in the core of the game from the beginning that worked perfecly from now.

https://nsmbhd.net/file/EMxdWJhs36qRXP3V/test.nmp

EDIT:
actually nevermind i tested it on a real ds and it works fine it just don't work with desmume for some reason

so the admins can delete this tread