is W.I.U 1.1 the best software to use to remove updates from PAL games as well as convert PAL games to NTSC U and play the ISO via a USB Stick using USB Loader GX.
Never heard of it and besides, none of those steps are necessary when loading from usb: Loading the game onto a WBFS drive will wipe the update partition and scrub the rest of the iso. Force video mode to system default or NTSC-U in GX game load settings to run your PAL games.
If you have any questions on any of this, check out the guides in the Tutorials section.
"I think that the Wii is a beautiful piece of hardware, and a broken Wii is a tragedy. It doesn’t matter why or how." -- Bushing