I also can't play DVD's I've tried installing both versions 0.2 and 0.4 of hackmii, but it says that it can't continue because there is no known vulnerable IOS...I have LU64+ with system menu 4.1u and used version 0.6 of hackmii on my initial softmod...here are the IOSes that i have installedby opertinicy - Homebrew Applications