I have a Wiikey and a launch Wii. I have the latest version of the Homebrew channel on my Wii and am running system menu 3.3. I have downloaded the USB loader, and added it to my SD card as per the instructions in GAF's guide. A few questions: Is cIOS 249 required? Can I safely update to 4.0? I have installed dvdlib and MPlayer CE, but I can't play DVDs or Music CDs. What can I do to fix this? Any and all help is greatly appreciated.