Okay... I just gotten a bricked wii from a friend.
I don't know about his previous firmware and it become bricked because of upgrading to firmware 4.2U.
Power up blank screen.
Noticed the blue light, and try my luck on bootmi/boot2 and it works.
No nand backup so can't recover.
Make a nand backup in case I screwed up making it worse.
I can access homebrew channel and control it using gamecube controller cos i cant sync the controller.
I also has wadmanager1.5 with gc control.
So i tried from everything from the link in the first post.
Non of them works except that I cant install 3.4e due to error 1022.
Appreciate your help if there is a solution for the wii.
Anyway it's a jap wii.