In reply to Excuse me for adding to an old thread but I'm having the same problem? I get this black screen when I try and launch BootMii from the HBC menu. I've read on some videos/reports that you have to press the on/off switch once or twice then the reset button three times before the BootMii menu shows. I've tried those options on my v4.3 but it still doeesn't show.by Keithuk - BootMii Beta