That is agood question. he has one of 2 options at this point. he could softmod, but softmodding isn't for everyone. you have to be more careful in what you do and be able to follow the directions carefully for the softmod as well as any other ios files needed in the future. sometimes it is a trial and error situation and requires some patience.
he could run the disk update from the NSMB and be at system menu 4.1 and have all the ios files needed, but it is hard to tell what the future of wii games holds and he wouldn't have the control over system files that softmodding would allow.