cIOS (vWii): Add NUSGet Instructions for offline setup (#193)

* cIOS: Add NUSGet Instructions for offline setup

* Adapt changes from #192

Author: GABO1423

docs/cios.md

@@ -215,7 +215,56 @@ Ensure that if you are using an SD card, the lock switch is in the unlocked posi
 
 ## Instructions
 
-### Section I - Installing
+### Section I - Downloading
+
+::: tip
+
+Your browser or antivirus software may flag NUSGet as malware - this is a false positive. NUSGet does NOT contain any malware.
+
+:::
+
+::: info
+
+If you are able to connect your vWii to the internet, you may skip to [Section II](cios#section-ii---installing-1).
+
+:::
+
+1. Power off your console, and insert your SD card or USB drive into your computer.
+1. On your computer, download [NUSGet](https://github.com/NinjaCheetah/NUSGet/releases/latest/), choosing the archive corresponding to your operating system. For Windows users, you should choose the `NUSGet-Windows-x86_64-bin.zip` file.
+1. Unzip the archive and run the NUSGet executable.
+1. Select the `vWii` platform, navigate to `IOS` > `IOS 38` > `World` and select `v4380`. Uncheck `Keep encrypted contents`. Check `Re-encrypt title using the Wii Common Key`, then click `Start Download`.
+
+    ![](/images/desktop-apps/nusget/nusget-4380.png)
+1. Repeat the above step for `IOS 56 (v5918)`, `IOS 57 (v6175)` and `IOS 58 (v6432)`.
+1. When you have finished downloading the above IOS, click the folder next to `Start Download`. This will open your file manager to NUSGet's download folder.
+    ![](/images/desktop-apps/nusget/nusget-open-downloads.png)
+
+1. This folder should contain four different folders with the title IDs of the above IOS, as shown here.
+
+    ![](/images/desktop-apps/nusget/nusget-folder-vios.png)
+1. Enter the four directories, locating a `IOS-XX-vXXXX-vWii.wad` file in each.
+
+    ![](/images/desktop-apps/nusget/nusget-vios-output.png)
+1. Place each WAD file on the root of your SD card or USB drive.
+    * This must be the same device containing the d2x cIOS Installer.
+1. Ensure that each WAD file is named as listed below for compatibility purposes with d2x-cios-installer-vwii:
+
+    |  IOS   |     File Name      |
+    | :----: | :----------------: |
+    | IOS 38 | IOS38-64-v4380.wad |
+    | IOS 56 | IOS56-64-v5918.wad |
+    | IOS 57 | IOS57-64-v6175.wad |
+    | IOS 58 | IOS58-64-v6432.wad |
+
+::: info
+
+The WAD files should be on your SD card like this:
+
+![](/images/desktop-apps/nusget/nusget-vios-on-sd.png)
+
+:::
+
+### Section II - Installing
 
 1. Copy the `apps` folder in the d2x-cios-installer-vwii `.zip` to the root of your SD card or USB drive.
 1. Reinsert your SD card or USB drive into your console.