I'm on 4.2U, I can play wii backups fine, but every time I try and launch a gamecube game I just get a black screen. I've read a post about certain HDD's not being supported so I tried troubleshooting mine. It's dual formatted hdd in ntfs and fat32 for gamecube (32 byte cluster), it shows up fine in wiiflow, cfg loader and dios mios booter, it's just when I try and launch a game I just get a black screen. I tried using another usb (usb stick not a hdd) and it doesn't even show up on the loader so I don't know if it's just my hdd or a software glitch preventing it from booting. I have rvl miosv10.wad and dios mios 2.9 installed using wad manager 1.7. I can't seem to play gamecube games from the disc either unless I reinstall miosv10... I thought dios mios 2.9 supported both flash and disc loading.