I updated my BV10-32 from 0.1.8.9 to 0.1.9.9 shortly after I bought it, but didn’t notice any improvements/changes. I vaguely remember seeing a thread somewhere about what the improvements were supposed to be, but can’t find it any more.
I have no problem receiving HD programmes via terrestrial. Are you sure that the antenna is connected to the DVB-HD input, rather than the old analogue one?