This tool is for v5.5.1-v5.5.2 only (because of the HBL loader). OTP and SEEPROM are required, so it is only for previously hacked consoles with backup of those files. (If you installed redNAND before you should be able to dump those files from your SD)
(If you don't have OTP you can take the OTP from someone else because the USB key is the same).

This tool is very experimental, USE AT YOUR OWN RISK.
This tool is based on WFS File Injector.
Credit for @FIX94 for the Haxchi and for @dimok WFS Block Injector for the inspiration.

Instructions: (READ FIRST)

Preparing the USB

1. It is recommended to use a clean USB and format it for this process. The installer is expermintal and may corrupt the file system.
2. Buy and install one of the supported DS VC games, and move it to the usb.

Installing
Choose one of the following methods:

Method 1: Direct install to the USB (faster but more risky)

1. Connect the USB to your PC, and find out the drive index:
   Open PowerShell (WinKey + R, enter powershell)
   Run the command

   Get-WmiObject Win32_DiskDrive

   Find the DeviceID for your USB (Example: \.\PHYSICALDRIVE3)
2. Open command line with admin privileges (Start Menu -> Search for "Command Prompt" -> Right click wnd "Run as Administrator")
3. Go to the directory with the tool:
   

   cd <where you extracted the files from the zip>

4. Run the installer: (Don't forget to replace \.\PHYSICALDRIVE3 with the correct device)
   

   haxchi-pc-installer --image \\.\PHYSICALDRIVE3 --otp otp.bin --seeprom seeprom.bin

   And follow the instructions.

Method 2: Install on an image (safer)

1. Dump an image of the USB device with tool like Win32DiskImager.
2. It is recommended to backup the image.
3. Open ccommand line (WinKey + R, enter cmd)
4. Go to the directory with the tool:
   cd <where you extracted the files from the zip>
5. Run the installer:
   

   haxchi-pc-installer --image <dumped image file> --otp otp.bin --seeprom seeprom.bin

   And follow the instructions.
6. Flash the image back to the USB.

Finishing
Now just connect the USB back to the Wii U. If you run the game HBL should be opened instead.
Now with HBL access it is recommended to move the game back to the NAND and reinstall haxchi again with the regular Wii U installer.


Download (Source)

 

[dimok]

@tomcaliser has managed to install Haxchi. It was just an 'hexadecimal problem'. We can rely on @dimok 's observation: formatation just change the last byte (increase by 1).

Enviado de meu 6039J usando Tapatalk

Just fyi, I confirmed this observation a long time ago by looking into the IOSU code. Actually the whole seeprom usb seed acts as one big number. Meaning if the last byte runs over you have to increment the byte before it by one and so on (just like any normal integer incrementation in big endian). There is even a "bug" in nintendos code where the first 4 bytes would also increment, if the number ever gets that big (which I doubt). I can give you guys the IOS MCP position of the function, if you want to patch it to stop doing that, I would need to look it up though.

 

[IDris]

Sorry for the noob question, I have a 5.5.2 wii u and I'm going to get one of the lego games for vWii. Can I backup seeprom from the vwii mode?

 

[GrandZeldaGamer]

Just fyi, I confirmed this observation a long time ago by looking into the IOSU code. Actually the whole seeprom usb seed acts as one big number. Meaning if the last byte runs over you have to increment the byte before it by one and so on (just like any normal integer incrementation in big endian). There is even a "bug" in nintendos code where the first 4 bytes would also increment, if the number ever gets that big (which I doubt). I can give you guys the IOS MCP position of the function, if you want to patch it to stop doing that, I would need to look it up though.

does this mean we could just use that instead of seeprom dump or what?

 

[Glix]

does this mean we could just use that instead of seeprom dump or what?

Read what he wrote. He talking about how the Wii U adjusts it's seed for usb encryption. You can't guess it if you don't know what value it started from and an old post says we can't read it from the vWii, however he knows the address to patch out the seed changing meaning you could format and still use your usb drives without formatting them.

 

[pudink]

Read what he wrote. He talking about how the Wii U adjusts it's seed for usb encryption. You can't guess it if you don't know what value it started from and an old post says we can't read it from the vWii, however he knows the address to patch out the seed changing meaning you could format and still use your usb drives without formatting them.

Hello,
i hope someone here can help me.
I have formatted my wiiu but not formatted my old hdd that has my wii u games and saves.
now I want to make it work again as it is not recognized by the wii u anymore
I have downloaded seeprom.bin and otp files.
I will change the values for usb key seeds but I want to make sure they are the right ones.

so should I decrease this 1 value to A4?
and after that how can I make use of this file? should I use mocha cfw? can someone guide me through?

 

[GrandZeldaGamer]

Nvm about my comments I found the seeprom I hadn't dumped it onto my pc yet

<---dummy

 

[GrandZeldaGamer]

I got an error that says "Wfs: Failed to detect sector size"
what does that mean?

 

[BullyWiiPlaza]

@EyeKey
Running the command

Get-WmiObject Win32_DiskDrive

yields the error:

You should clarify this part or provide an alternative.

 

[DrDuck]

@EyeKey
Running the command

Get-WmiObject Win32_DiskDrive

yields the error:

You should clarify this part or provide an alternative.

That looks suspiciously like you're trying to issue powershell commands in to the Windows Run command box.. You need to use powershell.

 

[BullyWiiPlaza]

That looks suspiciously like you're trying to issue powershell commands in to the Windows Run command box.. You need to use powershell.

Yeah, you were right but this is what came up with the Windows + R key

 

[ImBatman]

is there a way to do it without the SEEPROM ?
please tell me there is a way

 

[BullyWiiPlaza]

is there a way to do it without the SEEPROM ?
please tell me there is a way

Of course not, stop asking people. How hard is it to understand you need the NAND dump in advance?

 

[Corredor]

is there a way to do it without the SEEPROM ?
please tell me there is a way

Not now

 

[GrandZeldaGamer]

I got an error that says

Error: Wfs: Failed to detect sector size

what does that mean?

 

[EyeKey]

I got an error that says

Error: Wfs: Failed to detect sector size

what does that mean?

A bug that was already fixed in wfslib, but I haven't update this program yet. I will update it today.

 

[GrandZeldaGamer]

A bug that was already fixed in wfslib, but I haven't update this program yet. I will update it today.

thx

 

[piratesephiroth]

thx

If you're in a hurry, I compiled this like 2 days ago so it has the error fixed.

 

[GrandZeldaGamer]

If you're in a hurry, I compiled this like 2 days ago so it has the error fixed.

how do i use it?
Edit: or at least the inject path needed for brain age (--inject-path)

 

[piratesephiroth]

how do i use it?

lolwut, it's a zip file

 

[GrandZeldaGamer]

lolwut, it's a zip file

as in the .exe's i know how to extract it