I have just installed it yesterday and it works fine.
Do you have all the files listed at the end of the first post here?
http://gbatemp.net/index.php?showtopic=97615
And which DSTT firmware did you use? I took 1.17 with the no fake killer patch
I'm gonna buy another Series X, but can't decide if I should wait till the Xbox June event (maybe they get discounted) or just buy now. What do you guys think?