Go into SETTINGS / ABOUT / UPDATE and it shows attempt of a 300+ MB download has failed. The button says TRY AGAIN, but does nothing. Yet everything else about the box operates normally (other than I can't get into Google Play Store because it says I'm running an old version). I've tried powering the unit off briefly to no avail. I've tried clicking the DO IT AGAIN button and leaving it over night, to no avail. Any ideas on breaking this loose would be greatly appreciated.