How to manually hex edit KH rom:
1: Google and download a program called XVI32. This is the hex editor I used.
2: Open your KH rom.
3: At the top click address, then click goto, then click hexidecimal.
4: Type 010E5DC into the box and click ok.
5: The first block should be highlighted and have 0C in it.
6: At the top click edit, click overwrite string, click hex string, in the bottom box type 37.
7: Where it said 0C in the first box it should now say 37.
8: Click file, then click save.
9: Put the file you just saved on your flash cart and enjoy
P.M. me if you need further help.