I set the cios to 249, NAND to disabled. My wad files are on a fat32 USB hdd in a folder in the root called wad. When I try to access the hdd I'm getting the ret -1 or when I try USB 2.0 I get the ret -2 error. Tried YAMMM (I think that's it) and same errors. Installed ios236 and same errors. Any advice?