Getting Started

Welcome, new Cemu user!
This is a guide for everyone who never had any contact with emulation and/or forgot how to do certain things.
Please carefully read the explanation and the needed steps!

Be advised WE DO NOT SUPPORT ANY ILLEGAL ACTION YOU ARE COMMITTING BY DOWNLOADING GAME FILES THROUGH THE INTERNET! YOU SHOULD OWN THE ORIGINAL WII U AND KNOW HOW TO DUMP THE GAMES TO YOUR DEVICE! ONLY DUMP GAMES THAT YOU OWN! PLAY & BE LEGAL!

What is Cemu?

WiiU runs the "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:	< 4 GB, 8 GB or more recommended
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

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

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		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		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		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		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		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's or transfering saves

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 on.
• 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.
• 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):

• Download Disc2App from https://github.com/koolkdev/disc2app/releases/download/v1.0/disc2app.zip and place Mocha.elf into your SD:\wiiu\apps folder.
• Download FTPiiU Everywhere from https://github.com/FIX94/ftpiiu/releases and place ftpiiu.elf into your SD:\wiiu\apps folder.

• If you want to use Mocha, you'll need to install some alternative files:

• Download Disc2App from https://github.com/koolkdev/disc2app/releases/download/v1.0/disc2app.zip and place Mocha.elf into your SD:\wiiu\apps folder.
• Download FTPiiU Everywhere from https://cdn.discordapp.com/attachments/526469047890739220/542145496374837250/ftpiiu_everywhere.zip and place ftpiiu.elf into your SD:\wiiu\apps folder.

Steps for physical copies

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.

• 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 game

• 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 all of the dumped game folders (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.tmb and title.tik.
• Drag those 2 files onto CDecrypt_v2.0b.exe which will decrypt the game into Code, Content, and Meta folders.
• You may now delete all files except the folders Code, Content, Meta. And now repeat the steps until you've decrypted all of your physical dumps.
• Now that you've got the base game, there's likely some updates available or you want to add some DLC's you have on your Wii U.

Dumping downloaded games, updates and 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.

• 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.

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• Navigate to storage_mlc/usr/title/ on the right side of the program if you have installed the actual game 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 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".

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• 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.

Transfering save files 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 their save files, you can visit these two threads:

• Wii U Save Files Compilation: https://gbatemp.net/threads/wii-u-save-files-compilation.427761/
• Loadiine Save File Sharing Thread: https://gbatemp.net/threads/loadiine-save-file-sharing-thread.414878/

If you rename US save files to EU save files or the other way around, it usually works.

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.

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

• Configuration
• Configuring Controllers
• Graphic pack

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"