Unfortunately, did not work....
So not sure where to go from here.
Question though, do I have to trucha sign this after making the changes to the ISO as above?
Have a jap wii which is giving me black screen error burning it directly. Tried using wiifrii (did NTSC-U to NTSC-J change) but did not work. So what I will do is try the method on piratebay.org for the boom blox torrent. Let me post it for others:
"Seems like someone changed the PAL version...