Hacking RealWnD Real Nand Dump Tool

[vettacossx]

Source:
http://wiibrew.org/wiki/RealWnD

RealWnD is a 1:1 Wii NAND Dumper based on YaWnD 0.3 but with several improvements. All currently available Wii NAND Dumpers misunderstand the IOS_Read() returned error code -12 and cause the dumped image file to be different from the image that would extracted by an external hardware programmer off a de-soldered NAND chip.

After analyzing, the -12 code seems very likely to be an ECC error but not simply a bad block. Most pages with a -12 return code might be unmanaged free blocks (with the ECC error caused by erased and not yet reprogrammed blocks). Zeroing these pages is a bit dangerous. If it happens that it's the very first time the ECC error occurred for a good page while dumping, zeroing it might render the dumped image useless.

Besides the -12 code, some people encounter a -11 code and stop their dumping. I guess the -11 code might be NAND read timeout and NAND status error. Stopping the dumping is not a good idea but zeroing it would be safe. I also provide an extra Page Debug Dump of these -11 codes for the user to later analyze.

For those whose NAND dumps without a -11 code, RealWnD can help them make a 100% 1:1 dump which is exactly the same as a hardware programmer dump.

Improvement

* Real 1:1 dump of NAND Flash by processing error code -11 and -12
* Greatly reduce dump time by opening files once instead of appending repeatedly
* Add log file for all error pages
* Change to new style FAT management code for easily compiling
* Add Debug Dump for -11 code or others for future analysis

How To Use

Most operations are the same as YaWnd. You can use button 1 to toggle SD and USB, button 2 to toggle +ECC and normal dump, and button A to start dump. In addition, you can use button B to toggle on/off for Debug Dump. A log file WiiFlash.log will log all page error return code. If DebugDump turs on, several image files WFD__.img will be created for future analysis.


Changelog

* v0.11 (08 May 2009) minor bugfix: error code -12 mis-typed as 12 cause error code -12 unnecessarily retry once.
* v0.1 (08 May 2009) Initial release.

Thanks To

* Homebrew Channel, DevkitPPC and libOGC developing crew.
* Redbird's YaWnd source code.
* Waninkoko's Wad Manager FAT management source code.

Has anyone got a chance to try this yet confirm it? thanks in advanced guys!

 

[wiiman123]

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[wiiman123]

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[TrickyTony]

Messing with NAND seems foreign to me. Even if you dump it. How would you reinstall (flash?) it? And why would you need to other than after a brick?

 

[WiiBlaster]

Only a person with a Infectus Chip could test, if it actually dumps a Usable Nand Img, But i always thought the Wii constantly writes to the nand, therefore corrupting the nand Dump when using software to dump the nand, But i may be wrong, I always thought there was a special way to properly dump the Wii Nand by using a Infectus Chip and do the DO Short, i can always double check on the infectus Website to be sure,

I would test it, cause i do own a infectus chip, but that damn thing has so many freakin solder points, i think like 15 or 16 on that little nand chip, i've never installed it, to the Nand, But if it does Properly Dump the Nand, Than it sounds like a Pretty neat program

it may come in handy when bootmii comes out

 

[pika9323]

Wow awesome.
I will make a new nand dump.

 

[Blue-K]

Always released yesterday, so it's a little late to post it... . Anyways, I've tried it yesterday, and it worked fine...dumped my NAND directly to my first FAT32-Partition on my USB-HD, so it seems to be perfect...don't know if it's usable...maybe someone can try when BootMii is out (I think I've heard that BootMii can restore your NAND...not shure though)...