Difference between revisions of "RealWnD"
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| − | + | '''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. | 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. | ||
Revision as of 03:57, 9 May 2009
| A Real 1:1 Wii NAND Dumper | |
| General | |
|---|---|
| Author(s) | pcfree |
| Type | Utility |
| Version | 0.11 |
| License | GPL |
| Links | |
| [[RealWnD011.zip|Download]] | |
| Source | |
| Peripherals | |
   | |
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_<page#>_<error code>.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.