Warning: There have been reports of display failures (white with dim vertical stripes) after disabling rd mode and rebooting a new 770. If you get this, there is a hardware failure in your device and you need to return it and get a replacement -- VilleRanki That failure is probably not related to any software-actions. Displays like the one of the 770 tend to break at powerup. But if yours survived the first 5 or 10 times, it should survive the rest, too. -- BooIiing