Help Restoring NAND for "Bricked" Wii; Backups aren't working

NAND corrupting itself/losing data over time. Hmmm. A failing NAND chip?

If the backups are fine and worked in the past and the SD card is good… I tend to see this as a hardware problem and would sadly locate the problem on the NAND itself. This could be tested by flashing a backup to a replacement chip with a hardware programmer and replacing the questionable NAND. But this is not something easy to do.

No idea if other failing hardware components could lead to such an persistent brick as well.
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Maybe I'm wrong, the above is more or less guesswork that somewhat fits to the error description. Perhaps somebody else has another idea…

This is unsatisfactory, but as long as you can boot into the HB Channel, you can pretty much still use the Wii.

 

I agree with Kleines, it sounds like you tried everything possible from a software solution perspective (I was going to suggest ohneschwanzenegger, but you tried it already). And if it truly is the nand that's failing it may get worse and eventually you might not be able to even boot into the HBC.

Hmmm, I just had an idea for a workaround "solution". You have bootmii installed as boot2, right? Try setting up neek2o (either sneek2o or uneek2o) and an emulated nand, ModMii can assist with this if you need it. Once properly configured, launching "bootmii" will actually launch neek2o and load the system menu from your external device instead of the internal nand. If the hardware failure is limited to the nand, this should work as long as the bootmii boot2 blocks are functional. This won't fix your real nand system menu, but bypassing it is the next best thing (short of hardware repairs)

 

Giantpune developed another app called punetwiin (I may have the spelling wrong) that could take a doner wii's nand dump and convert it to work on a recepient wii. Requires both sets of wii's keys. Before that you could use Betwiin to do the same thing but it was more challenging to get to work (so I've heard)

In my opinion it's not worth the effort. You can always use save game manager gx to Transfer most content.