# Manually Installing Switch Mods

{% hint style="info" %}
This is an outdated method of installing mods, written before [Aemulus Package Manager](https://github.com/TekkaGB/AemulusModManager) was updated to support P5R Switch. These instructions are still included for those who rely on the original workflow.
{% endhint %}

Follow the steps on the [Persona 5 Royal (Switch) Mod Support page](/getting-started/persona-5-royal-switch-mod-support.md) to obtain the `ALL_USEU.CPK` and `PATCH1.CPK` files.

The game considers the root of each `.CPK` to be the same folder. `PATCH1.CPK` has higher load priority, since it's meant to override anything that needs to be updated. We can extract and then rebuild `PATCH1.CPK` with our modded files inside.

1. Download [`CriPakGUI-P5R.7z`](https://drive.google.com/file/d/1X9TPpQffaiqH-bFCedxO5gOqt1uw0U3a/view?usp=sharing) and extract with [7-zip](https://www.7-zip.org/).
2. Open `ALL_USEU.CPK` and click the **Extract Files** button to unpack the files to a folder.\
   The program may appear to freeze, this is normal. Please be patient as this can take a very long time. 
3. Do the same with the `PATCH1.CPK`.

{% hint style="warning" %}
You can think of `ALL_USEU.CPK` and `PATCH1.CPK` like zip folders. They are compressed, so once unpacked, the contents become much larger. The unpacked files end up being about 35 GB in total, so make sure you have enough space free on your hard drive.
{% endhint %}

1. Download and extract [`CpkMaker.zip`](https://drive.google.com/file/d/19RAhHnro19plJK53wAE02R5kFOfRA8Xq/view?usp=sharing) to the directory containing your unpacked `.CPK` folders.
2. Drag the `PATCH1.CPK_unpacked` folder onto `CPK.bat` to build a new `PATCH1.CPK` containing your modded files.
3. Transfer the new `PATCH1.CPK` to the directory matching your target platform.\
   Switch: `sdmc:/atmosphere/contents/01005CA01580E000/romfs/CPK`\
   RyujiNX: `/Ryujinx/mods/contents/01005CA01580E000/romfs/CPK`\
   Yuzu: `/yuzu/load/01005CA01580E000/ModName/romfs/CPK`

Be sure to match the directory structure of the extracted `.CPK`.\
On Switch, there's one extra thing to consider: the root of the `BASE.CPK` contains two folders, `BASE` and `EN`. But you can actually substitute either one with a folder called `PATCH1` and the files will still be loaded. For instance, if you're editing a file in the `ALL_USEU.CPK_unpacked/EN/INIT/` folder, copy it to your `PATCH1.CPK_unpacked/PATCH1/INIT` folder.

{% hint style="success" %}
Replacement files/folders can be uppercase or lowercase, it doesn't matter since the game loads them either way! Just make sure the `.CPK` filename is all uppercase.
{% endhint %}


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