Sorry for double posting. I was able to downgrade my Wii to 4.1E now, all problems solved.
congratulation!! And can you tell me how to downgrade you wii? use ARC(Anyregion changer)?
In his case, he did it by using a nand backup (I assume with 4.1 on it). Restoring a nand obviously end you up with the firmware version that was on the backup (as well as all the IOS'es, cIOS'es, channels, boot2 version, savegames, tickets and whatever else was on the nand at the time the backup was created).
Basically, downgrading your wii* (as well as the "starting from scratch" as was mentioned in the OP) is a bad idea and is more likely to you ending up with a brick than with a solution for the reason you downgraded in the first place.
I don't exactly know how to downgrade your wii (the completesoftmodguide only has
a warning about it), but if you're absolutely serious about it, take notes of what the firmware upgrades actually contain (usually IOS upgrades, a system channel and some antipiracy stuff) and downgrade those careful. I don't know much of any region changer, but it was certainly not designed for downgrades (guess what the real purpose was
).
QUOTE('jordan_ch')