All 4.5 themes should work on your 8330 running 5.0, I'm running the same OS on my 8330 and all of my themes show up, even after re-install... only thing is any "today" or "today +" themes" do not scroll properly and also the text on the today screen may be a little garbled... not sure why your themes aren't showing up... maybe someone else can shed some light on this...