This is all my own experience. "Zelda - Spirit Tracks" still freezes at the white nintendo screen if you use a cheat. But works as long as you dont have a cheat activated, both with the xenophobia patched version and the clean rom. And yes, the latest cheat.db has codes for the Us version of Zelda (both the fixed version and the clean).
But as Densetsu3000, you still need the prepaired/hacked save for it to work properly.