I was able to get the bios to boot with my NTSC games. But it black screens with PAL and Quadforce. I imagine the opposite is true for Pal Wiis. I think there needs to be a per game option for bios in Wiiflow. Right now other region games blackscreen and there's no way to turn bios off except to delete them.
i dont no if i have the wrong idea of what the problem is. but i have PAL normall wii with PAL and NTSC games so i downloaded both bios's and each game (not every) loads with a bios