No, I haven't tried it yet, but since the February release reportedly disables the ALL REGION mode of BD playback, I was guessing most here probably stopped at or before December's. I was thinking that "feature" would have been the primary lure of this player for people here. However, since no-one has contradicted my HDMI audio problem with that release, perhaps you're right and everyone indeed went to February's? Still, if they had experienced it, surely they would mention it?
The tech support guy at Insignia Community Forum said he was trying to get the release previous to December's for me to download, I'm hoping that works out.