I tried the method recommended by Mauifrog.
This time, via the message board on the wii, I got the warning (scam) screen up, but unfortunately, like before, the "press A to continue" did not come up. So things appeared to just freeze.
So, I will try the nintendo official update now and return to the original Mauifrog softmod any wii guide. Fingers crossed. If you have an advice I would be very grateful
I have updated the wii the 4.3. Then I went back to the softmod any wii guide, and it worked!
Thank you very much to you Mauifrog and Cjizzle for your advice . I wouldn't have gotten it sorted without you