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---
title: "cIOS"
---
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{% include toc title="Table of Contents" %}
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This tutorial will tell you how to install cIOS (custom IOS). This is required if you want to load games with a USB Loader. Some homebrew might work better using cIOS.
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![cIOS Logo](/images/cIOS.png)
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#### What you need
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* A Wii with an outbound Internet connection
* An SD card with at least 128 MB of free space
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* [d2x cIOS Installer](https://sites.google.com/site/completesg/backup-launchers/installation/d2x-cIOS-Installer-Wii.zip?attredirects=0&d=1)
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#### Instructions
1. Load the d2x cIOS installer: ![d2x cIOS Logo](https://sites.google.com/site/completesg/_/rsrc/1441626125476/backup-launchers/installation/icon.png)
1. Press continue, then set it to the following:
```
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Select cIOS: d2x-v10-beta52
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Select cIOS base: 56
Select cIOS slot: 249
Select cIOS version: 65535
```
![Install cIOS 249](/images/Wii/Install249.png)
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1. Once set, press A to install.
1. When done installing, press A to return, and set it to the following:
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```
Select cIOS: d2x-v10-beta52
Select cIOS base: 57
Select cIOS slot: 250
Select cIOS version: 65535
```
![Install cIOS 250](/images/Wii/Install250.png)
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1. Once set, press A to install.
1. When done installing, press A to return, and set it to the following:
```
Select cIOS: d2x-v10-beta52
Select cIOS base: 58
Select cIOS slot: 251
Select cIOS version: 65535
```
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1. Run it again, then exit once done.
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[Continue to RiiConnect24](riiconnect24)
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RiiConnect24 will let you use Wii Mail, and other Channels again.
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{: .notice--info}