diff --git a/cleanup_and_isntall.sh b/cleanup_and_isntall.sh
new file mode 100644
index 0000000..9d45b53
--- /dev/null
+++ b/cleanup_and_isntall.sh
@@ -0,0 +1,74 @@
+#!/bin/bash
+
+BRANCHE="mqtt"
+
+show_cron_menu() {
+	echo "Choose option:"
+	echo "    1) Control modem via GPIO"
+	echo "    2) Control modem via MQTT"
+}
+
+# force run from root user
+if [[ $EUID -ne 0 ]]; then
+	exec sudo "$0" "$@"
+fi
+
+# cleanup old files
+rm /etc/ppp/chatscripts/sim800c &> /dev/null
+rm /etc/ppp/peers/sim800c &> /dev/null
+rm /etc/init.d/sim800c &> /dev/null
+rm /etc/systemd/system/sim800.service &> /dev/null
+rm /etc/systemd/system/sim800-healthcheck.service &> /dev/null
+rm /etc/systemd/system/sim800-healthcheck.timer &> /dev/null
+systemctl daemon-reload
+
+rm /etc/ppp/chatscripts/t3hs_sim800 &> /dev/null
+rm /etc/ppp/peers/t3hs_sim800 &> /dev/null
+rm /usr/bin/t3hs/t3hs_sim800 &> /dev/null
+rm /etc/init.d/t3hs_sim800.sh &> /dev/null
+rm /etc/cron.d/t3hs_sim800_gpio &> /dev/null
+rm /etc/cron.d/t3hs_sim800_mqtt &> /dev/null
+echo "Old files removed"
+
+apt update
+apt remove -y inetutils-ping
+apt install -y ppp curl iputils-ping mosquitto_utils
+echo "Dependencies installed"
+
+mkdir -p /etc/ppp/chatscripts
+curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/ppp/chatscripts/t3hs_sim800" > /etc/ppp/chatscripts/t3hs_sim800
+
+mkdir -p /etc/ppp/peers
+curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/ppp/peers/t3hs_sim800" > /etc/ppp/peers/t3hs_sim800
+
+mkdir -p /usr/bin/t3hs
+curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/usr/bin/t3hs/t3hs_sim800" > /usr/bin/t3hs/t3hs_sim800
+chmod +x /usr/bin/t3hs/t3hs_sim800
+
+mkdir -p /etc/init.d
+curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/init.d/t3hs_sim800.sh" > /etc/init.d/t3hs_sim800.sh
+chmod +x /etc/init.d/t3hs_sim800.sh
+
+mkdir -p /etc/cron.d
+while true; do
+	show_cron_menu
+	read -p "Your choose (1/2): " choice
+	case "$choice" in
+		1)
+			curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/cron.d/t3hs_sim800_gpio" > /etc/cron.d/t3hs_sim800_gpio
+			chmod 644 /etc/cron.d/t3hs_sim800_gpio
+			chown root:root /etc/cron.d/t3hs_sim800_gpio
+			break
+			;;
+		2)
+			curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/cron.d/t3hs_sim800_gpio" > /etc/cron.d/t3hs_sim800_gpio
+			chmod 644 /etc/cron.d/t3hs_sim800_mqtt
+			chown root:root /etc/cron.d/t3hs_sim800_mqtt
+			break
+			;;
+	esac
+
+if [[ ! -f /etc/t3hs/sim800 ]]; then
+	mkdir -p /etc/t3hs
+	curl -sSL "https://git.openergy.ru/LUCKFOX/SIM800C/raw/branch/$BRANCH/etc/t3hs/sim800" > /etc/t3hs/sim800
+fi