diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..591ddad
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,77 @@
+#!/bin/bash
+
+# NecroHash Updater
+# Aktualisiert Code und Services OHNE Neukompilierung.
+
+TARGET_DIR="/opt/necrohash"
+USER="pi"
+
+if [ "$EUID" -ne 0 ]; then
+  echo "Bitte als root ausführen (sudo ./update.sh)"
+  exit 1
+fi
+
+if [ ! -d "$TARGET_DIR" ]; then
+    echo "Verzeichnis $TARGET_DIR nicht gefunden."
+    exit 1
+fi
+
+cd "$TARGET_DIR"
+
+echo "=== Stoppe Dienste ==="
+systemctl stop necrohash-miner
+systemctl stop necrohash-gui
+
+echo "=== Aktualisiere Code (Git) ==="
+# Lokale Änderungen (z.B. Config) kurzzeitig speichern
+git stash
+git pull origin master
+# Lokale Änderungen wiederherstellen
+git stash pop
+
+echo "=== Setze Berechtigungen ==="
+chmod +x *.sh
+chown -R $USER:$USER "$TARGET_DIR"
+
+echo "=== Aktualisiere Service-Definitionen ==="
+# Wir schreiben die Services neu, falls sich im Repo die Startlogik geändert hat
+
+# GUI Service
+cat <<EOF > /etc/systemd/system/necrohash-gui.service
+[Unit]
+Description=NecroHash Web GUI
+After=network.target
+
+[Service]
+User=$USER
+WorkingDirectory=$TARGET_DIR
+ExecStart=$TARGET_DIR/start_gui.sh
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+# Miner Service
+cat <<EOF > /etc/systemd/system/necrohash-miner.service
+[Unit]
+Description=NecroHash Miner (cgminer)
+After=network.target necrohash-gui.service
+
+[Service]
+User=$USER
+WorkingDirectory=$TARGET_DIR
+ExecStart=$TARGET_DIR/miner_wrapper.sh
+Restart=always
+RestartSec=10
+
+[Install]
+WantedBy=multi-user.target
+EOF
+
+echo "=== Starte Dienste neu ==="
+systemctl daemon-reload
+systemctl start necrohash-gui
+systemctl start necrohash-miner
+
+echo "Update abgeschlossen!"