+ If you have not already done the main Wii U guide and do not know how to do this, please follow [Homebrew Launcher](homebrew-launcher), then return to this page.
This NAND backup will allow you to restore your vWii to a working state if anything goes wrong.
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1. Launch the Homebrew Channel on vWii
1. Launch Dump Mii NAND
+ Be prepared to wait; this can take a while (up to several hours depending on the speed of your SD card)
1. When it has completed, your Wii U will reboot automatically
1. Power off your Wii U
1. Put your SD card from your Wii U into your computer
1. **Copy the `nand.bin` and `keys.bin` from the root of your SD card to a safe location on your computer and back both up to multiple locations (such as online file storage); this backup will save your vWii from a brick if anything goes wrong**
1. Delete `nand.bin` and `keys.bin` from the root of your SD card
Ensure that there are no folders named `wad` or `wads` on the root of your SD card and that there are no other `.wad` files anywhere except `/apps/` on the SD card.
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1. Get into the Homebrew Channel on vWii
+ Haxchi and Homebrew Launcher Mocha CFW users can do this by selecting vWii from the SysNAND system menu, then launching the Homebrew Channel
+ CBHC Mocha CFW users can do this by holding (B) at boot, then selecting "Boot vWii Homebrew Channel"
1. Launch d2x cIOS Installer
1. Set the options on the top of the screen to match the following:
This step will brick your vWii installation if it fails for any reason (power outage, etc) which will require a vWii NAND backup to restore. Ensure you have yours before proceeding with this section.
1. From the Homebrew Channel on vWii, launch Patched IOS80 Installer for vWii
1. Read the warning, then wait 30 seconds for it to allow you to continue
1. Press (A) to install
+ This should be very quick
1. When it has completed, press any button to return to the Homebrew Channel
1. Exit to the vWii Menu
___
You can now install and use any Wii homebrew such as USB Loader GX, Wiiflow, CFG USB Loader, emulators, etc.
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External hard drives must be connected to the upper back USB port of the Wii U to be detected by vWii. This cannot be the same external hard drive you use for Wii U games. If you are using an external HDD that does not have its own power source, then you will need a [Y-cable](http://amzn.to/2mjQjin).
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Ensure any `.wad` files (channels, forwarders, games, etc) you install are formatted to [work properly with vWii](https://gbatemp.net/threads/340226/) first. If you install a `.wad` formatted for a regular Wii console, you will brick the vWii which will require a vWii NAND backup to restore.
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Installing custom themes on vWii will brick your vWii.
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Removing `.wad` files manually without knowing what you are doing will brick your vWii.