diff --git a/INSTALLATION.md b/INSTALLATION.md
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+# Installation
+
+This page explains the different ways how to install the modpack on client or on server.
+
+## Requirements
+
+- [Java 25 JRE (x64)](https://adoptium.net/de/temurin/releases/?os=windows&arch=x64&package=jre&version=25) *-> only if not using PrismLauncher; use MSI package for installation*
+- [Minecraft Modpack Updater](https://pilzinsel64.de/minecraft-modpack-updater)
+- Minecraft launcher of your favorits _([PrismLauncher](https://prismlauncher.org) recommended)_ _-> only for clients_
+
+## Client
+
+This instruction explains how you can install the modpack on your client. It uses the Minecraft Modpack Updater and PrismLauncher as launcher.
+
+> [!tip] Video instruction
+> Take a look to [this video](https://youtu.be/fwBywUxV2s8) on YouTube. It shows how to install this modpack using Minecraft Modpack Updater and PrismLauncher.
+
+### Prepair launcher
+
+This follows the steps for PrismLauncher as example. You might need to adjust the steps for your launcher.
+
+1. Create a new profile with the following inputs:
+    - Minecraft version: `1.7.10`
+    - Modloader: `Forge`
+    - Modloader version: `10.13.4.16.14`
+2. Edit the previously created instance, goto "Settings" and adjust the following options:
+    - RAM (min & max): `5120` MiB
+    - Java installation
+        1. Enable the checkbox "Java installation"
+        2. Download the correct Java version: "Java download" -> "Adoptium" -> untick "Recommended" -> choose "Java 24" -> Choose the latest version at the top -> click "Download".
+        3. Click on "Auto detection" and select the correct Java installation.
+    - Java arguments: Enable the checkbox "Java arguments" and paste the following arguments into the textbox: \
+`-XX:+OptimizeStringConcat -XX:+UseStringDeduplication -XX:+UnlockExperimentalVMOptions -XX:+AlwaysPreTouch -XX:+DisableExplicitGC`
+3. Start Minecraft once to initialize the folder structure
+
+### Installation & update
+
+#### Minecraft Modpack Updater
+
+Follow the instructions of the [official handbook](https://git.pilzinsel64.de/litw-refined/minecraft-modpack-updater/-/wikis/User-manual). Use the following values.
+
+- **Modpack config:** `https://git.pilzinsel64.de/LITW-Refined/update-info/raw/branch/main/info.json`
+- **Installation key:** *Enter the installation key you got from your server administrator, if you got one.*
+
+#### Pre-packaged packages
+
+Alternatively can download the pre-packaged packages from [this link](https://cloud.pilzinsel64.de/s/kMzZT4yiNJZ9oED) and copy & paste the content of it into the `.minecraft` folder within the Minecraft instance folder of the launcher.
+
+> [!important] Additional step for pre-packaged packages
+> If you use the pre-packaged version on PrismLauncher, then you need install multimc-patches for lwjgl3ify manually. Just download the file `lwjgl3ify-X.Y.Z-multimc.zip` from [lwjgl3ify GitHub releases](https://github.com/GTNewHorizons/lwjgl3ify/releases) and copy (and replace) the content of the ZIP archive to the insstance folder of Minecraft (in PrismLauncher click to "Folder" on the right side).
+
+## Server
+
+### Installation & update
+
+#### Minecraft Modpack Updater
+
+Follow the instructions of the handbook. Use the following values.
+
+- **Modpack config:** `https://git.pilzinsel64.de/LITW-Refined/update-info/raw/branch/main/info.json`
+
+#### Pre-packaged packages
+
+Alternatively can download the pre-packaged packages from [this link](https://cloud.pilzinsel64.de/s/kMzZT4yiNJZ9oED) and copy & paste the content of it into the `.minecraft` folder within the Minecraft instance folder of the launcher.
\ No newline at end of file
diff --git a/README.md b/README.md
index dfc8382..f5056b1 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ With over 200 mods, LITW Refined brings a wealth of new content to explore. Disc
     <tr>
       <td valign="top">
         🌍 <a href="https://pilzinsel64.de/after-humans/">Website</a><br>
-        🖥️ <a href="https://git.pilzinsel64.de/LITW-Refined/modpack/wiki/installation">Installation</a><br>
+        🖥️ <a href="https://git.pilzinsel64.de/LITW-Refined/modpack/src/branch/main/INSTALLATION.md?display=rendered#installation">Installation</a><br>
         ⬇️ <a href="https://cloud.pilzinsel64.de/index.php/s/kMzZT4yiNJZ9oED">Downloads</a><br>
         📃 <a href="https://cloud.pilzinsel64.de/index.php/s/Er3YsCENRmaNtwg">Modlist</a><br>
         💬 <a href="https://matrix.to/#/#litw-refined:pilzinsel64.de">Chat</a><br>