@pug306d
I have to admit I don't know anything about DVD Region X Boot Disc but, I imagine your using it like I use my GS.
I think your missing the step where you swap your main boot disc with a original DVD game (I use Devil may cry demo) with high TOC.
Jump to this thread for more info:
http://fileforums.com/showthread.php?s=&threadid=38232