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Latest revision as of 17:45, 17 November 2019


Welcome, new person!
This is a guide for everyone who has never had any contact with emulating "new generation" consoles or has forgotten how to do certain things.
Please carefully read the explanation and the needed steps! Skipping something can lead to having to redo everything!


Be Advised
THE ONLY LEGAL WAY TO OBTAIN GAMES IS TO DUMP THEM FROM YOUR/OR YOUR FRIEND'S CONSOLE
ONLY DUMP GAMES THAT YOU OWN! PLAY & BE LEGAL!
Ignoring this warning has been known to lead to ISP Warnings, Account Termination, or Fines

What is Cemu?

Cemu what.PNG

The Wii U runs "Café OS" and Cemu emulates the system. It creates the possibilty to run Wii U data formats on a PC, e.g. dumped games.
For more advanced information about Café OS, check out this link: http://wiiubrew.org/wiki/Cafe_OS

System Requirements

OS: Windows 7 (x64) or above
API: OpenGL 4.1 (4.6 is used if available)
RAM: Minimum of 4GB for light titles, 8GB for most titles, at least 16GB or more for compatibility with every title.
GPU:
  • NVIDIA GPU: Runs as expected on most recent driver.
  • AMD GPU: Runs as expected on most recent driver
  • Intel GPU: Not officially supported. Heavy visual glitches.


Download & Install Cemu

Download & Install Cemu

  1. Download the latest version of Cemu. Check Cemu's website for the latest release.
  2. Unpack the cemu_x.x.x.zip file.
  3. Start the emulator by double-clicking Cemu.exe.
  4. Installing extensions like Cemuhook for video playback, code patching in graphic packs and more.
  5. A very in-depth text guide for setting up Cemu is maintained here Serfrosts Cemu Setup Guide.
Supported Games

Supported games

Before you begin dumping your games, check out http://compat.cemu.info/ or our list of games to know how the performance is or what bugs are existing.

Rating Icon Description
Perfect Smiley-Perfect.png Games rated this are games that have no discernible issues. No graphical or audio glitches, no crashes, no bugs that didn't exist in the original game. Quite simply, they run perfectly.
Playable Smiley-Playable.png Games in this category are playable to the end of the game. Can have some minor graphical or audio glitches or issues, but these do not greatly affect playability or prevent game completion.
Runs Smiley-Runs.png Games in this category can get in-game and usually run very well, but major graphical or audio glitches or game-breaking bugs make it difficult to continue playing or finish the game.
Loads Smiley-Loads.png Games in this category manage to load at least a screen before crashing, or can get through the in-game menus before crashing, or sometimes in-game before crashing, but they generally crash CEMU at some point.
Unplayable Smiley-Unplayable.png Games in this category do not load in CEMU. Either they crash immediately following the first load attempt, or they display a black screen until you close CEMU.
Dumping your Games, Updates, DLC - or Transferring Saves
First Steps

First Steps

Prerequisites:

  • An SD card and a way to put files on it (if your PC doesn't have a SD card reader, you could use a laptop that does have one).
  • A homebrewed Wii U while being able to launch (see https://wiiu.hacks.guide/ for a guide on how to do this). Just make sure that you know how to launch Mocha CFW or CBHC (Coldboot Haxchi) and go into the Homebrew Channel.
  • Enough space on your computer to store the games.
  • If you want to dump physical games, you'll need to have that SD card that you use above be 24+ GB or have a seperate USB stick that's FAT32 formatted.
  • FTP Method: Have FileZilla installed on your PC.


You'll also need to place a few files on your SD card. Choose the steps according to which method you use:

  • If you use CBHC (Coldboot Haxchi, not Regular Haxchi):
  • If you want to use Mocha with or without Regular Haxchi, you'll need to install some alternative files:
Dumping Physical Discs [Does not include Updates or DLC]

Steps for Physical Disc Games

Dumping the game to your PC

  • Remove your Game Disc from the Wii U, Disc2App will ask for it later.
  • Insert your SD card back into your Wii U.
  • Open the Homebrew Channel.
  • For CBHC (Coldboot Haxchi): Run Disc2App.
  • For Mocha: Run Mocha CFW first and let the Wii U restart. After that, try launching the Homebrew Channel again, and now run Disc2App.

Disc2App.png

  • Select either SD or USB to dump your game discs on.
Again, make sure that 24+ GB free on your SD card/USB stick. And if you use an USB stick make sure it's FAT32 formatted.
  • When asked, insert the disc for your game.
  • The game is dumped to SD/USB:\install\[TitleID Folder]
  • After it finishes, dump your next game or press home to exit and turn off your Wii U.
  • Now, eject the storage device you dumped your disks on and access the SD card or USB stick.
  • You can rename the [TitleID] folder of each game to the name of the game and move it to some folder you want to store your games in.
You can find the game's title ID on http://wiiubrew.org/wiki/Title_database#00050000:_eShop_and_disc_titles.

Decrypting your Physical Disc Dump

  • Download Cdecrypt v2.0b from https://cdn.discordapp.com/attachments/526469047890739220/539529151095373824/Cdecrypt_v2.0b.zip .
  • Extract the zip and go to that folder. Copy the same 3 files from the folder into each dumped game folder (or only 1 folder if you've dumped only 1 physical game).
  • In each of the folders you've copied those files to, hold down CTRL and select both title.tmd and title.tik.
  • Drag those 2 files onto CDecrypt_v2.0b.exe which will decrypt the game into Code, Content, and Meta folders.
If dragging & dropping does not have any effect for you, you may click in the Window Address bar and type CMD , then press Enter--bringing up Command Prompt.
You may then copy and paste the following command & send.  To paste, right-click in the window blank space. The command is as follows:

.\CDecrypt_v2.0b.exe .\title.tmd .\title.tik
  • Afterwards, you may now delete all files in this game folder, except the folders Code, Content, Meta.
  • You may now repeat the steps until you've decrypted all of your physical dumps.
  • Now that you've finished processing the base game, there's likely an Update or some DLC you have on your Wii U. See the next sections.
FTP Method: Dumping Digital Games, Updates, and DLC

Dumping Digital Games and installed Updates & DLC

Make sure that your Wii U is connected to the same network as your computer and make sure to update your game to the latest version.
If transferring your files over FTP fails, please use the [ (Optional) Dumping the MLC NAND ... ] section, further down the page.
  • Insert your SD card into your Wii U.
  • Open the Homebrew Channel.
  • For CBHC (Coldboot Haxchi): Run FTPiiU Everywhere.
  • For Mocha: Run Mocha CFW first and let the Wii U restart. After that, try launching the Homebrew Channel again, and now run FTPiiU Everywhere.
  • On your screen, you should be able to see a line "Listening for data connections at xxx.xxx.xxx.xxx:XXXX". Note down the text at the end with the numbers in it.
  • On your computer, open FileZilla.
  • From the File menu in the menu bar, open the Site Manager.
  • Click on the New Site button.
  • Now, you'll want to configure the settings on this new "site":
  • In the Host field, put in the longer xxx.xxx.xxx.xxx part you noted down.
  • In the Port field, put in the rest of the numbers of that thing you have made a note of, represented by the XXXX.
  • Change the Encryption to "Only use plain FTP (insecure)"
  • Change the Logon Type to "Anonymous"
  • Go to the "Transfer Settings" tab and click the checkbox to enable the "Limit number of simultaneous connections" and then set the amount of connections to 1.
  • Then click the Connect button and you'll be set! You can just use this site again if you want to connect to your Wii U. Make sure that it now shows folders on the right side of the program.

  • Navigate to storage_mlc/usr/title/ on the right side of the program if you have installed the actual game (update) you're looking for to System Storage/NAND.
  • Navigate to storage_usb/usr/title/ on the right side of the program if you have installed the actual game (update) you're looking for to an external USB device.
  • Then, open one of the following folders, depending on what you want to dump.
The 00050000 folder stores installed games.
The 0005000E folder stores installed updates.
The 0005000C folder stores installed DLC.
  • Once you've opened that folder, you'll have to find the folder that corresponds to what you wish to dump. Inside, find the folder who's 8 digits match the last 8 of the game's title id.
You can find the game's title ID on http://wiiubrew.org/wiki/Title_database#00050000:_eShop_and_disc_titles
  • Before you transfer the files to your computer, navigate on the left side of the screen to the directory you want to store your games/updates/DLC's.
It's handy to keep these things separated. Make one folder for the base game (the game without any updates), one for updates and another one for DLC's.
  • Now, it's as simple as right-clicking the folder you've just found and clicking "Add files to queue".

  • Now, repeat the steps from above for each game/update/DLC you want to transfer. Once you're done with adding them to the queue, you can continue with the next steps.
  • Press CTRL+P to start transferring everything that you've queued...
This process will take a long while. You can leave the program running while you do other stuff.
Be really careful to not accidentally delete or mess stuff up! If you follow every instruction carefully, you should be fine.
  • You can now exit FTPiiU with the home button and close Filezilla once it's done transfering the files (when it says "Queued files" and nothing else after that on the left-bottom of the program).
  • Rename each dumped game/update/DLC folder to reflect what it is (like for example MarioKart8_Update etc.).
  • For updates and DLC's, you'll first need to install them in Cemu first. Read the update instructions for more info.
NAND Dump Method: Dumping Digital Games, Updates, and DLC

Dumping the MLC NAND of your Wii U for Installed Games, Updates, and DLC instead of using FTP

    If FTP fails for you and you cannot find out why, you can instead dump the entire MLC NAND to your SD Card.  You cannot use a USB to do this.
Requirements:
  • SD Card with 8GB (16GB preferred,) free space for White Wii U Models. (White model has 8GB internal storage.)
  • SD Card with 32GB (with at least 29.3GB free) or 64GB free space for Black Wii U Models. (Black model has 29.1GB internal storage.)
  • Your SD card has to be formatted FAT32 for the Wii U to be able to read it and the allocation unit size is best set to 32KB.
  • On larger SD cards (64GB+) Windows will not let you format the SD as FAT32, to circumvent that use guiformat
Steps:
  • Launch the Homebrew Launcher with your preferred method explained earlier in this guide.
  • Run the nanddumper homebrew application. Nanddumper will not work with Mocha CFW in use, restart the Wii U if this is the case.
  • Set the options to only dump otp.bin and MLC(8GB/32GB)
  • Press A to begin the dump. The dump will default to the root of your SD card in 2GB chunks; 4 files for 8GB or 15 files for 32GB.
This process will take some time. Once it finishes, the Wii U will go back to the System Menu or shut down.
  • Access the SD Card on your PC. Copy the otp.bin and mlc.bin.part0# files to a preparation area of your choice (not your SD Card); there should be 4 or 15 parts.
  • The place you copy these to must have double the storage capacity of the mlc.bin.part0# files!
  • If when transfering the mlc.bin.part0# files it says there is an error/corruption, skip that file and transfer the rest.
  • If this happens you will need to try to re-dump the MLC NAND. Afterwards, try to copy the part that was previously corrupt to the location of your non-corrupted parts.
  • Download this zip and extract one of the scripts into the location of your 4 or 15 mlc.bin.part0# files.
8GB Wii U MLC.bin Joiner Scripts
32GB Wii U MLC.bin Joiner Scripts
  • With everything in place, run the script. It will copy the part files and merge them together into mlc.bin (this will take awhile.)
Now we must extract the files from your mlc.bin to where you can browse the files freely.
  • You must now download WFS Tools, unfortunately it is only pre-built for Windows, I do not know much of Linux or MacOS methods.
WFS Tools Github Releases
  • Extract the tool to your mlc.bin location.
  • Create a new folder named "Extracted" in your mlc.bin location.
  • You will now need to open a CMD window in your mlc.bin location, there are a few ways to do this -
a) In the File Explorer address bar, type CMD and press enter.
b) You can hold shift & right-click the blank area of the current location and open a CMD or PowerShell window.
c) If you're savvy you can cd to the required directory, but I'll leave that to you.
Edit the following command to point to your own "Extracted" folder, the address must be wrapped in " "
    wfs-extract --input mlc.bin --output "C:\Users\*\Desktop\Wii U NAND Backup\Extracted" --otp otp.bin --mlc
  • Once you're sure it's correct, you may paste it into the Command Line Window and send it; it will now begin extraction.
  • To paste a line of text in regular CMD you simply right-click the blank space of the window.
This process will take some time, it will tell you when it has finished. Hopefully no errors arise or you may need to start over.
I recommend keeping your mlc.bin or the Extracted files somewhere safe. CEMU may end up allowing the use of more files in the future!
  • Follow the majority of the FTP Method in the earlier section of this Guide to figure out where your Installed Games, Updates, DLC, and Save files are located in your Extracted MLC NAND folder.
Transferring Save Data between your Wii U and CEMU

Transfering Saves between Wii U and CEMU

Make sure that your Wii U is connected to the same network as your computer.
  • Insert your SD card into your Wii U.
  • Open the Homebrew Channel.
  • For CBHC (Coldboot Haxchi): Run FTPiiU Everywhere.
  • For Mocha: Run Mocha CFW first and let the Wii U restart. After that, try launching the Homebrew Channel again, and now run FTPiiU Everywhere.
  • On your screen, you should be able to see a line "Listening for data connections at xxx.xxx.xxx.xxx:XXXX". Note down the text at the end with the numbers in it.
  • On your computer, open FileZilla.
  • From the File menu in the menu bar, open the Site Manager.
  • Click on the New Site button.
  • Now, you'll want to fill in the Host and Port field.
  • In the Host field, put in the longer xxx.xxx.xxx.xxx part you noted down.
  • In the Port field, put in the rest of the numbers of that thing you have made a note of, represented by the XXXX.
  • Go to the "Transfer Settings" tab and click the checkbox to enable the "Limit number of simultaneous connections".
  • Then click the Connect button and you'll be set! You can just use this site again if you want to connect to your Wii U. Make sure that it now shows folders on the right side of the program.
Navigate to storage_mlc/usr/save/00050000/ on the right side of the program if you have installed the game to System Storage/NAND.
Navigate to storage_usb/usr/save/00050000/ on the right side of the program if you have installed the game to an external USB device.
  • After you've opened that folder, locate the folder who's 8 digits match the last 8 of your game's title ID.
Once more, you can find the game's title ID on http://wiiubrew.org/wiki/Title_database.
  • Open, out of the multiple 8000000X folders that you'll see, the folder that that belongs to your user account. They're numbered in order of creation.
  • Transfering save files from Wii U to Cemu:
  • Launch the game in Cemu and open your log.txt that's in the same folder as your Cemu.exe file and look for the line where it states your game's "Save Path".
  • Go to that location on the left side of the FileZilla window and open the 80000001 folder. Remove all the files and folders in this folder.
  • On the left side of the window, select all of the files and folders and right-click the selection. Click Download and wait for the files to transfer.
  • You can press the home button to quit FTPiiU and test it out. You can also exit FileZilla.
  • Transfering save files from Cemu to Wii U:
  • Launch the game in Cemu and open your log.txt that's in the same folder as your Cemu.exe file and look for the line where it states your game's "Save Path".
  • Go to that location on the left side of the FileZilla window and open the 80000001 folder.
  • On the right side of the window, remove all of the files and folders.
  • On the left side of the window, select all of the files and folders and right-click them. Click Upload and wait for the files to transfer.
  • After it's done, you can press the home button to quit FTPiiU and test it out.

Extra tip:
If you want to play around with other people's save files, you can visit these two threads:
If you rename US save files to EU save files or the other way around, it usually works.
Setting Games, Updates, and DLC to work with CEMU

Starting

Updating Games and Installing DLCs

To add your DLC or update to the non-updated game, it's recommended to install it via Cemu's UI. Once you open Cemu, go to `File -> Install Update or DLC` and go to the update/DLC folder. Open the Meta folder and select the Meta.xml file.

Using dumped games

Compatible Files by File Extension
File extension
wud: Wii U Disc Images
wux: Compressed Wii U Disc Images
iso: Generic file extension for disc image files.
wad: Wii U Disc Images
rpx: Wii U executable
  1. Start cemu.exe.
  2. File -> Load
  3. Select the file you want to load
To load a wud, wux, iso, wad file:
  • Load the Wii U Disc Images by selecting the image file (wud, wux, iso, wad). These require you to have the title keys in Cemu's `keys.txt` file.
To load a rpx file:
  • Browse to the game folder and open the folder code\ and select the *.rpx file.
Lists of Various CEMU Options

Keyboard Shortcuts

Alt + Enter Toggle between windowed or full screen.
Ctrl + Tab Toggle between TV or GamePad display.
Esc Leave full screen.
Shift + Print Copy a current-res screenshot to the clipboard.
Ctrl + Alt + F Enable/Disable Fenceskip.
Hold Tab Shows the Game pad View while key is being pressed.

Game settings

Command line options

To start a game via the command line, open Command Prompt in the folder (by e.g. Shift + R -> cmd and use cd to open the Cemu dictionary or Shift + RIGHT_CLICK -> Open command window here inside the application folder).
Arguments:

-g "path" Loads a game
-mlc "path" Customize the path of the mlc01 directory
-ud Enable upside-down render mode.
-f Launch in fullscreen mode.
-nsight Allow debugging via NVIDIA Nsight
-legacy Enable all Intel GPU workarounds

Usage example: cemu.exe -g "C:\games\example.wud"