That says to me that anybody claiming they can repair your bricked Wii is lying. They’d need you to have already backed up your Wii’s memory (for which not everyone is as insightful) and if you can do that, then you can repair it yourself, yeah?

yes. this came from 91wii.com
Author mentioned in the text. He said that did not write all the steps.

This is very interesting

It’s bullshit. It makes no sense, the guy is making it all up. I’d try to explain why, but there’s not even anything there to disprove — it does not even slightly resemble reality. Why do people write up posts like that?

Hi,

Some people said:

opne the brickednand.bin and

Found “if mdck =*************** then”
Sentence, in which “***************” is your CPUKEY.
and Open the NAND.BIN with TrueCrypt v6.3a For Linux
Found “if [email = mdck = @ then] mdck =########## then [/ email]”
Replace ########## with the *************** and save
finally flash the NAND.BIN to nand flash and soldering the nand flash. it will done.

It is possible?

I didn’t answer your question, because Dasda did, in #8.
I guess I’m not smart enough to get it from Dasda reply!

The main check is “do I have a TMD for this game” (for savegames)
Does is mean we cannot copy a savegame [to Wii] until the game DVD is inserted at least once?

So, no, there’s not much you can do with the ECC key except for hack savegames
Good to know. I thought nobody want to share the way to extract them because of piracy reasons. Apparently (from your later posts!) it’s just not quite simple thing to do!

and there are easier ways to accomplish that. Namely, edit the contents of the file on NAND and then use the menu to copy it to SD card for you, or there’s an ES call (ES_Sign) which will just do this directly from any program you write.
As of now it seemed a much easy way to “copy to PC – decrypt – edit – encrypt – copy to Wii”, than write full blown save game editor as native Wii program (at least for me!). But there is no doubt, in the very near further we will see that program.

ECC keys are only used in one place: by the system menu, when copying things to or from the SD card. So, when you copy a savegame or a VC game from the NAND to an SD card, it gets signed with your console’s ECC key.

When you copy a savegame or a VC game from the SD card to the NAND, the System Menu checks to make sure the ECC signature is valid — among other things. The main check is “do I have a TMD for this game” (for savegames) or “do I have a valid ticket for this game” (for VC games). It also does the usual RSA signature check, etc.

So, no, there’s not much you can do with the ECC key except for hack savegames, and there are easier ways to accomplish that. Namely, edit the contents of the file on NAND and then use the menu to copy it to SD card for you, or there’s an ES call (ES_Sign) which will just do this directly from any program you write.

@Newbie: There are three keys that are unique to each Wii: NAND AES, NAND HMAC, ECC.

VC games do have an extra layer of protection, in that the ticket that belongs to each game is keyed specifically (and individually) for each Wii.

@chris: A wad uninstaller is needed because not all channels can be deleted — I think there’s either a range of title IDs, or a bit that can be set in the TMD, that indicates that a channel is a “system channel” which cannot be deleted. This is why people can’t fix the “duplicate channel problem” themselves.

That aside, when you do delete something, it still leaves some bits around — at least the ticket, and possibly the TMD and the directory structure, too. None of this should be a problem — but hey, you never know…