Oricum varianta asta cu scoaterea completa a modarii pare destul de complicata, mai simpla pare varianta cu update-ul shop-ului. Din ce am inteles eu ghidul ar fi la zi dar atunci cand doresti sa scoti modarea trebuie sa faci downgrade la firmware 4.1 iar cand totul e gata faci iar update la 4.3. Oricum, mie mi se pare destul de riscant, mai ales cu acest downgrade:
Alright so when I am soft modding my Wii, I have the option to keep it as 4.3U. When I am removing the soft mod I will have to change it to 4.1U, but I'll be able to update to 4.3U or no? Is it a problem if I kept it at 4.1U because this Wii isn't only mine and my younger siblings play new games.
Yes, when soft modding you have that option.

Yes, when you are removing the soft mod from your wii you will have to downgrade to 4.1.

Yes, you will have to update back to 4.3.
The guide to remove the soft mod will explain this thoroughly.
Remove Softmod From ANY Wii - Page 22

Din ce mai scrie pe thread se pare ca ai putea face update-ul direct de la nintendo cum se face in mod normal, se va pierde modarea si va functiona ca un wii normal, insa vor ramane urme ale modarii in sensul ca nu va fi un wii virgin. Nu stiu daca va avea vreun efect asupra functionalitatii, din ce scrie mai jos se pare ca nu, insa am citit pareri ale staff-ului tot pe acest forum ca nu prea e indicat.
I'm guessing i cant just use the normal nintendo update to clear all this stuff off

That depends on your purpose really. If you just want to make it work like a normal Wii then the update from Nintendo will do that. If you want to make it as close to factory as possible and prevent someone from knowing it was ever modded the you have to do the guide.
Remove Softmod From ANY Wii - Page 23
Oricum, daca nu esti sigur 100% de ce faci, mai bine nu face.