diff --git a/README.md b/README.md
index d6376b7..1e74113 100644
--- a/README.md
+++ b/README.md
@@ -123,6 +123,16 @@ The GUI labels are in Indonesian.
 
 ## Install
 
+One command (downloads the latest release, verifies its SHA-256, installs the app, the
+systemd user unit, the menu entry and the udev rule):
+
+```bash
+curl -fsSL https://raw.githubusercontent.com/oxpoe/Gamemax-linux-apps/main/install.sh | bash
+# uninstall:  bash install.sh --uninstall        (add --remove-data to drop settings too)
+```
+
+Manual steps, if you prefer to see every command:
+
 ```bash
 # 1. device access for the logged-in user (once, needs root)
 sudo cp packaging/70-gamemax.rules /etc/udev/rules.d/
diff --git a/install.sh b/install.sh
new file mode 100755
index 0000000..8bb5816
--- /dev/null
+++ b/install.sh
@@ -0,0 +1,181 @@
+#!/usr/bin/env bash
+# GAMEMAX LCD — pemasangan / pelepasan satu perintah.
+#
+#   curl -fsSL https://raw.githubusercontent.com/oxpoe/Gamemax-linux-apps/main/install.sh | bash
+#
+# Opsi:
+#   --uninstall      lepaskan pemasangan (layanan, aplikasi, config, ikon, entri menu)
+#   --no-service     pasang aplikasi saja, jangan aktifkan layanan/autostart
+#   --version vX.Y.Z pasang versi rilis tertentu (default: rilis terbaru)
+#   --remove-data    saat --uninstall: hapus juga ~/.config/gamemax-report
+#
+# UdeV: aturan izin device dipasang dengan sudo. Kalau skrip dijalankan lewat pipa
+# (curl | bash) dan sudo butuh kata sandi, perintahnya dicetak untuk dijalankan manual.
+set -euo pipefail
+
+REPO="oxpoe/Gamemax-linux-apps"
+ASSET="GAMEMAX-LCD-x86_64.AppImage"
+RAW="https://raw.githubusercontent.com/$REPO/main"
+
+OPT_DIR="$HOME/.local/opt/gamemax-lcd"
+APP="$OPT_DIR/GAMEMAX-LCD.AppImage"
+DATA_DIR="$HOME/.local/share/gamemax-report"
+UNIT="$HOME/.config/systemd/user/gamemax-report.service"
+DESKTOP_DIR="$HOME/.local/share/applications"
+ICON_DIR="$HOME/.local/share/icons/hicolor/128x128/apps"
+RULE=/etc/udev/rules.d/70-gamemax.rules
+SERVICE="gamemax-report.service"
+
+UNINSTALL=0 WITH_SERVICE=1 REMOVE_DATA=0 VERSION="latest"
+
+say() { printf '%s\n' "$*"; }
+die() { printf 'galat: %s\n' "$*" >&2; exit 1; }
+
+while [ $# -gt 0 ]; do
+  case "$1" in
+    --uninstall)    UNINSTALL=1 ;;
+    --no-service)   WITH_SERVICE=0 ;;
+    --remove-data)  REMOVE_DATA=1 ;;
+    --version)      shift; VERSION="${1:?--version butuh nilai seperti v1.3.0}" ;;
+    -h|--help)      sed -n '2,14p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
+    *)              die "opsi tidak dikenal: $1" ;;
+  esac
+  shift
+done
+
+need() { command -v "$1" >/dev/null 2>&1 || die "perintah '$1' tidak tersedia"; }
+
+# ---------------------------------------------------------------- uninstall
+if [ "$UNINSTALL" = 1 ]; then
+  say "== melepaskan GAMEMAX LCD =="
+  command -v systemctl >/dev/null 2>&1 && systemctl --user disable --now "$SERVICE" 2>/dev/null || true
+  rm -f "$UNIT"
+  command -v systemctl >/dev/null 2>&1 && { systemctl --user daemon-reload 2>/dev/null || true; \
+    systemctl --user reset-failed "$SERVICE" 2>/dev/null || true; }
+  rm -rf "$OPT_DIR" "$DATA_DIR"
+  rm -f "$DESKTOP_DIR/gamemax-lcd.desktop" "$ICON_DIR/gamemax-lcd.png"
+  [ "$REMOVE_DATA" = 1 ] && rm -rf "$HOME/.config/gamemax-report"
+  command -v update-desktop-database >/dev/null 2>&1 && update-desktop-database "$DESKTOP_DIR" 2>/dev/null || true
+  if [ -f "$RULE" ]; then
+    if sudo -n rm -f "$RULE" 2>/dev/null; then
+      sudo -n udevadm control --reload 2>/dev/null || true
+      say "  aturan udev dihapus"
+    else
+      say "  aturan udev masih ada (butuh sudo): sudo rm -f $RULE && sudo udevadm control --reload"
+    fi
+  fi
+  say "selesai. Aplikasi, layanan, dan berkas pendukung sudah dilepas."
+  say "catatan: konfigurasi ~/.config/gamemax-report hanya dihapus dengan --remove-data."
+  exit 0
+fi
+
+# ---------------------------------------------------------------- install
+need curl
+need sha256sum
+command -v systemctl >/dev/null 2>&1 || die "systemd (systemctl) dibutuhkan untuk layanan"
+
+if [ "$VERSION" = "latest" ]; then
+  BASE="https://github.com/$REPO/releases/latest/download"
+else
+  BASE="https://github.com/$REPO/releases/download/$VERSION"
+fi
+
+say "== GAMEMAX LCD: pemasangan ($VERSION) =="
+mkdir -p "$OPT_DIR" "$DATA_DIR" "$DESKTOP_DIR" "$ICON_DIR" "$HOME/.config/systemd/user"
+
+say "1/6 mengunduh aplikasi …"
+curl -fsSL -o "$APP.part" "$BASE/$ASSET"
+curl -fsSL -o "$APP.sha256" "$BASE/$ASSET.sha256"
+
+say "2/6 memverifikasi checksum …"
+EXPECTED="$(awk '{print $1}' "$APP.sha256")"
+ACTUAL="$(sha256sum "$APP.part" | awk '{print $1}')"
+[ "$EXPECTED" = "$ACTUAL" ] || { rm -f "$APP.part"; die "checksum tidak cocok — unduhan dibatalkan"; }
+say "   ok: ${ACTUAL:0:16}…"
+
+mv -f "$APP.part" "$APP"
+chmod +x "$APP"
+rm -f "$APP.sha256"
+
+say "3/6 mengambil sender + ikon dari bundel …"
+TMP="$(mktemp -d)"
+( cd "$TMP" && "$APP" --appimage-extract >/dev/null 2>&1 ) || true
+INTERNAL="$TMP/squashfs-root/usr/bin/_internal"
+if [ -f "$INTERNAL/gamemax_report.py" ]; then
+  cp "$INTERNAL/gamemax_report.py" "$DATA_DIR/gamemax_report.py"
+else
+  say "   ! sender tidak ditemukan di bundel — unduh dari repo"
+  curl -fsSL -o "$DATA_DIR/gamemax_report.py" "$RAW/src/gamemax_report.py"
+fi
+[ -f "$INTERNAL/icon.png" ] && cp "$INTERNAL/icon.png" "$ICON_DIR/gamemax-lcd.png" \
+  || curl -fsSL -o "$ICON_DIR/gamemax-lcd.png" "$RAW/src/icon.png"
+rm -rf "$TMP"
+
+say "4/6 memasang layanan systemd (autostart + plug and play) …"
+cat > "$UNIT" <<EOF
+[Unit]
+Description=GAMEMAX HID sensor display bridge (PcInfoMonitorPro replacement)
+After=graphical-session.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/python3 $DATA_DIR/gamemax_report.py --wait --interval 0.5 --sample 0.5
+Restart=always
+RestartSec=3
+
+[Install]
+WantedBy=default.target
+EOF
+systemctl --user daemon-reload
+if [ "$WITH_SERVICE" = 1 ]; then
+  systemctl --user enable --now "$SERVICE"
+  sleep 2
+  say "   layanan: $(systemctl --user is-active "$SERVICE") / $(systemctl --user is-enabled "$SERVICE")"
+else
+  say "   dilewati (--no-service)"
+fi
+
+say "5/6 memasang entri menu + ikon …"
+cat > "$DESKTOP_DIR/gamemax-lcd.desktop" <<EOF
+[Desktop Entry]
+Type=Application
+Name=GAMEMAX IceBurg LCD
+GenericName=Kontrol LCD AIO
+Comment=Status, nyala/mati, pemantauan, dan pengaturan LCD AIO GAMEMAX IceBurg
+Exec="$APP"
+Icon=gamemax-lcd
+Terminal=false
+Categories=System;Utility;
+EOF
+command -v update-desktop-database >/dev/null 2>&1 && update-desktop-database "$DESKTOP_DIR" 2>/dev/null || true
+command -v gtk-update-icon-cache >/dev/null 2>&1 && \
+  gtk-update-icon-cache -f -t "$HOME/.local/share/icons/hicolor" 2>/dev/null || true
+
+say "6/6 aturan udev (izin device) …"
+RULE_TMP="$(mktemp)"
+curl -fsSL -o "$RULE_TMP" "$RAW/packaging/70-gamemax.rules"
+if [ -f "$RULE" ] && cmp -s "$RULE" "$RULE_TMP"; then
+  say "   sudah terpasang"
+elif sudo -n install -m 644 "$RULE_TMP" "$RULE" 2>/dev/null; then
+  sudo -n udevadm control --reload 2>/dev/null || true
+  sudo -n udevadm trigger --subsystem-match=hidraw 2>/dev/null || true
+  say "   terpasang"
+elif [ -t 0 ]; then
+  sudo install -m 644 "$RULE_TMP" "$RULE" && sudo udevadm control --reload && \
+    sudo udevadm trigger --subsystem-match=hidraw && say "   terpasang"
+else
+  say "   ! butuh sudo — jalankan sekali:"
+  say "     sudo install -m 644 $RULE_TMP $RULE && sudo udevadm control --reload && sudo udevadm trigger --subsystem-match=hidraw"
+fi
+rm -f "$RULE_TMP"
+
+say
+say "== selesai =="
+say "  aplikasi : $APP"
+say "  sender   : $DATA_DIR/gamemax_report.py"
+say "  menu     : GAMEMAX IceBurg LCD"
+say "  layanan  : systemctl --user status $SERVICE"
+say "  log      : journalctl --user -u $SERVICE -f"
+say
+say "buka aplikasinya untuk mengatur slot kipas/sumber suhu, atau:"
+say "  $APP --window"