diff --git a/update-scripts/1-1-2_1-1-90.sh b/update-scripts/1-1-2_1-1-90.sh
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+++ b/update-scripts/1-1-2_1-1-90.sh
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+#!/bin/bash
+# Script for updating Rangitaki 1.1.2 to 1.1.90
+# WARNING: Rangitaki 1.1.90 is for testing purposes only
+echo "WARNING: You're about to install a testing version of Rangitaki."
+read -r -p "Do you want to continue? (y/N) " answer
+if [[ "$answer" == "y" || "$answer" == "Y"  ]]; then
+    echo "Getting the up-to-date version..."
+    mkdir ./rbe-new
+    cd ./rbe-new || exit
+    wget -q -c https://github.com/mmk2410/Rangitaki/archive/v1.1.90.zip
+    unzip -qq v1.1.90.zip
+    rm v1.1.90.zip
+    mv ./rangitaki-1.1.90/* ./
+    rm -rf ./rangitaki-1.1.90
+    cd ../ || exit
+    echo "Updating ressources..."
+    rm -rf ./res
+    mv ./rbe-new/res ./
+    echo "Update languages..."
+    rm ./lang/en.php
+    rm ./lang/de.php
+    mv ./rbe-new/lang/en.php ./lang/
+    mv ./rbe-new/lang/de.php ./lang/
+    echo "Update themes..."
+    rm ./themes/background-img.css
+    rm ./themes/material-dark.css
+    rm ./themes/material-light.css
+    mv ./rbe-new/themes/background-img.css ./themes/
+    mv ./rbe-new/themes/material-dark.css ./themes/
+    mv ./rbe-new/themes/material-light.css ./themes/
+    echo "Cleaning up..."
+    rm -rf ./rbe-new
+    echo "Done!"
+fi