Requirements:
WiiScrubber v1.40;
nfs2iso2nfs v0.5.4; it may require the Wii common Key. You can use wiiscrubber's key.bin renamed to wii_common_key.bin.
A clean rip of your Wii game;
The extracted contents of a Wii VC title for the Wii U (except the .nfs files);
-the 2 below require java to be installed-
jnustool (requires Wii U common key so you'll have to search online - hint: it begins with D7B0. Open the "config" file in notepad and paste the key inside, replacing [COMMONKEY]);
NUSpacker (must be @ihaveamac's version, requires Wii U common key as well)

Current limitations:
It's possible to use the gamepad to emulate ONLY the Classic Controller.
Wii Remote emulation is possible but there's no gyroscope or infrared commands (at least for now).
(Input emulation patches by @FIX94)

The game must be already compatible with the Classic Controller but that isn't a guarantee that it's going to work.
Here's a compatibility list: http://wiki.gbatemp.net/wiki/WiiU_VC_Wii_inject_compatibility_list

Integrity checks are still in place so only clean disc rips work.
The game iso must be pristine: untrimmed, unscrubbed and the partitions signed.
No homebrew, no mods, no wimmfi patched games until sigpatches are implemented.
Patched isos work now! Original idea by @Tock46!

Homebrew works now, even a special version of Nintendont by @FIX94

Trimmed isos still don't work, at least not isos trimmed by WiiScrubber.



HOW TO DO IT


0. Downloading a Wii VC Title
This may be illegal and I'm just telling you so you don't ever do it by mistake OK?
You can use the command line to download games' contents directly if you know the title id and title key.
I heard you can get them on a certain titlekeys site...

Once you have that, this is the command

java -jar JNUSTool.jar TITLEID TITLEKEY

Note: You should get a game that contains the latest revision of fw.img (r590), that's the only version supported by @FIX94's patches.
Here's some info you can use to verify that you have a good file:
Size: 1785497 bytes.
CRC32: E2F27E9B
MD5: 3CAF52A9A440EEE4F125A3AD22E305C8
SHA: A5A75EBF3164874830A1D5992495DE510AB3F74E

Now here's a list of some titles that contain the preferred fw.img (verified mostly by @fejich and @markehmus)
DONKEY KONG JUNGLE BEAT [VBXE01]
Kirby's Epic Yarn [VARE01]
Lost in Shadow [VA8E01]
Mario Strikers Charged [VBFE01]
Mario Super Sluggers [VBHE01]
Pandora's Tower [VAPE01]
PIKMIN 2 [VBTE01]
PIKMIN [VBUE01]
Resident Evil 4 Wii Edition [VBDE01]
Resident Evil The Umbrella Chronicles [VBWE01]
Rhythm Heaven Fever [VAKE01]
Sin and Punishment Star Successor [VALE01]
Super Mario Galaxy [VBKJ01]
Super Paper Mario [VBBE01]
The Legend of Zelda Skyward Sword [VANE01]
Trauma Team [VA6E01]
Wario Land Shake It [VBGE01]
WARIO WARE SMOOTH MOVES [VBVE01]





-----------------------------------------------

1. WiiScrubber
First setup WiiScrubber. Remember it needs the Wii common keys so run MakeKeyBin.exe first and do as it says.
Run it and open you iso. Right-click the UPDATE partition and select "Delete partition". Confirm.

Now click on the + box to expand the DATA partition, then expand partition.bin.
Right click tmd.bin, select "Extract" and save it.
Do the same with ticket.bin.

Rename the extracted ticket.bin to rvlt.tik
Rename the extracted tmd.bin to rvlt.tmd

Copy/move both files to the "code" folder of the Wii VC title.

Your iso is now ready and you can close WiiScrubber.


2. nfs2iso2nfs
Move your iso to the "content" folder of the Wii VC. Rename the file to "game.iso".
The content folder should contain only game.iso and the "assets" folder. Delete any nfs files that are still present.

Copy nfs2iso2nfs.exe to the content folder and run it. If everything is in place, it will begin the conversion process.
It should take around 15 minutes. Its console window will close when it's finished.
Once it ends you can delete your iso file and nfs2iso2nfs.exe (and wii_common_key.bin if it exists).
The content folder should contain only the nfs files and the "assets" folder.

Optional: You can enable Classic Controller emulation for playing using only the gamepad.
Open meta.xml (it's in the meta folder) in notepad.
Look for the line

<drc_use type="unsignedInt" length="4">1</drc_use>

replace it with

<drc_use type="unsignedInt" length="4">65537</drc_use>

and save the file.
Note that this will only work if the game supports the Classic Controller.
If it doesn't either it won't boot or you won't be able to do anything and only the gamepad's power button will work.
Here's a list of such games: https://wiki.gbatemp.net/wiki/List_of_Wii_games_compatible_with_Classic_Controller


3.NUSpacker
The final part, building the installation files.
NUSpacker requires the Wii U common key. You should find it online and then open the file "encryptKeyWith" with
notepad and paste the key inside (hint: it begins with D7B0)

It's also a command line tool so you'll have to write down the commands, or simply create a new text file,
write the command inside, save it and change the extension from .txt to .bat

I recommend copying the Wii VC folder (that contains the other 3 folders, code, content and meta) to nuspacker's folder.
That will make everything easier.

The command works like this (replace with the names of your own folders)
If you folders have spaces in their names, enclose them in quotation marks, like "Just Dance".

java -jar nuspacker.jar -in GAME_FOLDER -out INSTALATION_FILES_FOLDER

Wiait until it finishes the process.
Now just copy the folder with the installation data to the "install" folder SD card, run a CFW and install it with WUP Installer GX2!

PS: If you make a nonfunctional game, remember to uninstall it before trying again.
If you install a fiunctional game over a broken installation, it will still appear as broken.

 

[wicksand420]

I remade the forwarder with it. But that changes how it saves? lol Hmm maybe that is why it exits to black screen too?

Do you have the version that fix put up of wiisxr? Mine didn't freeze at a black screen unless i loaded a wonkey game

 

[A Plus Ric]

I am pretty sure. Maybe i need to delete some configs from the old stuff.

 

[wicksand420]

Also, I don't know if people noticed but the folders are case sensitive, like sd:/apps/wiiSXR and sd:wiisxr

in sd:/wiisxr/saves your saves go, did you have any in there?

 

[A Plus Ric]

Dunno what the problem was. I deleted the configs. made sure to replace the forwarder again and the main dol now it saves. lol Thanks. lol I musta had something wrong in the settings i think.

 

[wicksand420]

Dunno what the problem was. I deleted the configs. made sure to replace the forwarder again and the main dol now it saves. lol Thanks. lol I musta had something wrong in the settings i think.

Cool man,glad its working for ya.

 

[Crazystato]

for example Metroid Prime 2 Echos = sd:/codes/G2ME01.gct

It works, I was able to invert the C-stick!
So much better now, I've uploaded it for anyone that wants it.
Works on NTSC version of Super Mario Sunshine
Remember to turn on Cheats and Cheat path in Nintendont settings and copy codes folder to SD root thanks @wicksand420

 

[wicksand420]

It works, I was able to invert the C-stick!
So much better now, I've uploaded it for anyone that wants it.
Works on NTSC version of Super Mario Sunshine
Remember to turn on Cheats and Cheat path in Nintendont settings and copy codes folder to SD root thanks @wicksand420

Thanks for the inverted c-stick

Also, if you use USBLoader GX you can go to the games you want cheats for and download them, and make gct files containing the cheats you want

 

[cucholix]

I wonder if it would be possible extract the contents of a WiiWare wad and convert them to a iso image, then convert the iso to nfs.

 

[ploggy]

It works, I was able to invert the C-stick!
So much better now, I've uploaded it for anyone that wants it.
Works on NTSC version of Super Mario Sunshine
Remember to turn on Cheats and Cheat path in Nintendont settings and copy codes folder to SD root thanks @wicksand420

Just to clarify, are you playing the game with the WiiU Gamepad?

 

[Cyan]

I wonder if it would be possible extract the contents of a WiiWare wad and convert them to a iso image, then convert the iso to nfs.

It might be possible if you can redirect the NAND path to another location, like Neek is doing or cIOS emuNAND too.
the channels are accessing path like title/00010002/TitleID/data/
you'll have to rewrite all access request to "title/00010002/ to something else (SD or internal iso path)

remember, EmuNAND done by cIOS is not 100% compatible, and that's why some games require neek.

I don't even know if IOS255 is intended to launch channels, maybe it will require a custom channel booter.
Well, with ideas, it could probably be done. easy or soon, I don't know.

 

[DiegoSousa]

I think it might have a hard time reading the games from the wii u formatted HDD

@FIX94 @ploggy
Is not it possible for you to improve the compatibility of controls for PunEmu by creating a version 1.2?
I think a lot of people who wanted their iso-format roms would love it. Mostly the staff who likes everything in the same HD, my SD card is small and did not want to busy it.
I intended to convert to wup with the script.
You've done a great job with the WiiVC, it spared me from using a second hard drive whose case was damaged and giving me a headache.

 

[ploggy]

@FIX94 @ploggy
Is not it possible for you to improve the compatibility of controls for PunEmu by creating a version 1.2?
I think a lot of people who wanted their iso-format roms would love it. Mostly the staff who likes everything in the same HD, my SD card is small and did not want to busy it.
I intended to convert to wup with the script.
You've done a great job with the WiiVC, it spared me from using a second hard drive whose case was damaged and giving me a headache.

If each Emulator is compiled with the new Gamepad patch sure it would be possible to make an updated Punemu.

 

[DiegoSousa]

If each Emulator is compiled with the new Gamepad patch sure it would be possible to make an updated Punemu.

I do not have a clue how to do this.
Do you have the free time to work out a new project with the aim of improving PunEmu or enabling a way to use the WiiUHDD for storing roms ?, it would be better if you use the existing script.
Edit: It would be great to make it compatible with all existing controls.

 

[Billy Acuña]

I do not have a clue how to do this.
Do you have the free time to work out a new project with the aim of improving PunEmu or enabling a way to use the WiiUHDD for storing roms ?, it would be better if you use the existing script.

It's not that simple, you need to hardcode the actual inputs on every emulator, also you cannot load roms off HDD on WiiVC.

 

[ploggy]

I havent got the skills needed to recompile the emulators with the new gampad patch but when someone comes forward and does that then it will be easy to make an updated punemu (just a matter of replacing the old emu dols with the new ones)

 

[DiegoSousa]

It's not that simple, you need to hardcode the actual inputs on every emulator, also you cannot load roms off HDD on WiiVC.

I think you did not understand.
I'm wondering if there is a possibility that PunEmu or any emulator will work in a similar way to the injected Wii and GC games.
GC games are injected and installed on WiiUHDD.

 

[sion_zaphod]

Any USB loaders work through inject? USB gx, wiiflow or cfg?

 

[DiegoSousa]

I havent got the skills needed to recompile the emulators with the new gampad patch but when someone comes forward and does that then it will be easy to make an updated punemu (just a matter of replacing the old emu dols with the new ones)

Got it.
But, is there a possibility to do this with external emulator channels?
With the possibility of roms being converted as with GC isos.

 

[ploggy]

Got it.
But, is there a possibility to do this with external emulator channels?
With the possibility of roms being converted as with GC isos.

I honestly don't know? maybe I think you can have a Punemu Channel with roms built into it. tbh I never tried

 

[ShadowOne333]

Not to sound harsh or anything, but I'm just wondering why choose the GX emulators over the RetroArch ones if you are using a Wii U?
I mean, we already have pretty much everything covered on the Wii side with RetroArch, except for PSX and N64 at the moment.
Any particular reason?