OK, I have tested this from disc and have found no love. If a semi bricked Korean Wii can load disc, it can only be done with mode. Not working for me.
I am going to try to extreact starfox from SSBB-KOR, and paste the header into starfox-usa. See if that changes anything. But as it is now it seems that semi bricked KOR wii does not even try to load disc.
Edit- I have tested this more without luck. The only way this would work from my tests is if the wii had USA system menu, KOR system settings with game region changed to USA.
These are my results with KOR settings and USA menu
Language set to KOR prevents system menu from loading. 3.x loads to health screen, then black screen. 4.x loads to colored purple lines.
System Region set to KOR gives 3.x-4.x (KOR) in RM with USA menu installed
Game Region set to KOR with USA menu- prevents all disc loading, no games, no disc update, no recovery disc, nothing loads or every seems to try to load.
So if someone had a USA system menu installed and had 3.x-4.x (KOR) in RM, I think they must have patched only the game region in setting.txt to USA, then semi bricked. If the game region was USA and the menu was USA you could fix it. Some the user I quoted who fixed a bricked error 003 with 4.3(KOR) in RM, must have had the game region set to USA.
I have only tested from disc, so perhaps there is some wode magic that can fix it. I don't think it can be fixed though. I am pretty sure that a semi bricked wii with all KOR settings and a USA menu is bricked beyond repair, probably true for EURO/JAP as well.