Glad to see updates . Also what ROM version do you use?I used 2.55 MP when I assembled it with rom8x, but my Nspire uses the "fake" OS 2.56 MP.
Oh, if you tried to dump OS 2.56MP with rom8x and it ended up as 2.55MP then that might be the issue. You might want to use a ROM of a real 84+ instead if that's what you mean. If you're using a real ROM then maybe it's corrupted. Have you tried TilEm?