diff --git a/install/pialert_update.sh b/install/pialert_update.sh
new file mode 100644
index 00000000..d1dcb332
--- /dev/null
+++ b/install/pialert_update.sh
@@ -0,0 +1,257 @@
+#!/bin/bash
+# ------------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  pialert_update.sh - Update script
+# ------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+# ------------------------------------------------------------------------------
+
+
+# ------------------------------------------------------------------------------
+# Variables
+# ------------------------------------------------------------------------------
+INSTALL_DIR=~
+PIALERT_HOME="$INSTALL_DIR/pialert"
+LOG="pialert_update_`date +"%Y-%m-%d_%H-%M"`.log"
+PYTHON_BIN=python
+
+
+# ------------------------------------------------------------------------------
+# Main
+# ------------------------------------------------------------------------------
+main() {
+  print_superheader "Pi.Alert Update"
+  log "`date`"
+  log "Logfile: $LOG"
+  log ""
+
+  set -e
+
+  check_pialert_home
+  check_python_version
+
+  create_backup
+  move_files
+  clean_files
+
+  download_pialert
+  update_config
+  update_db
+
+  test_pialert
+  
+  print_header "Update process finished"
+  print_msg ""
+
+  move_logfile
+}
+
+# ------------------------------------------------------------------------------
+# Create backup
+# ------------------------------------------------------------------------------
+create_backup() {
+  print_msg "- Deleting previous Pi.Alert backups..."
+  rm "$INSTALL_DIR/"pialert_update_backup_*.tar  2>/dev/null || :
+  
+  print_msg "- Creating new Pi.Alert backup..."
+  cd "$INSTALL_DIR"
+  tar cvf "$INSTALL_DIR"/pialert_update_backup_`date +"%Y-%m-%d_%H-%M"`.tar  \
+    pialert --checkpoint=100 --checkpoint-action="ttyout=."     2>&1 >> "$LOG"
+  echo ""
+}
+
+# ------------------------------------------------------------------------------
+# Move files to the new directory
+# ------------------------------------------------------------------------------
+move_files() {
+  if [ -e "$PIALERT_HOME/back/pialert.conf" ] ; then
+    print_msg "- Moving pialert.conf to the new directory..."
+    mkdir -p "$PIALERT_HOME/config"
+    mv "$PIALERT_HOME/back/pialert.conf" "$PIALERT_HOME/config"
+  fi
+}
+
+# ------------------------------------------------------------------------------
+# Move files to the new directory
+# ------------------------------------------------------------------------------
+clean_files() {
+  print_msg "- Cleaning previous version..."
+  rm -r "$PIALERT_HOME/back"    2>/dev/null || :
+  rm -r "$PIALERT_HOME/doc"     2>/dev/null || :
+  rm -r "$PIALERT_HOME/docs"    2>/dev/null || :
+  rm -r "$PIALERT_HOME/front"   2>/dev/null || :
+  rm -r "$PIALERT_HOME/install" 2>/dev/null || :
+  rm -r "$PIALERT_HOME/"*.txt   2>/dev/null || :
+  rm -r "$PIALERT_HOME/"*.md    2>/dev/null || :
+}
+
+# ------------------------------------------------------------------------------
+# Download and uncompress Pi.Alert
+# ------------------------------------------------------------------------------
+download_pialert() {
+  if [ -f "$INSTALL_DIR/pialert_latest.tar" ] ; then
+    print_msg "- Deleting previous downloaded tar file"
+    rm -r "$INSTALL_DIR/pialert_latest.tar"
+  fi
+  
+  print_msg "- Downloading update file..."
+  curl -Lo "$INSTALL_DIR/pialert_latest.tar" \
+    https://github.com/pucherot/Pi.Alert/raw/main/tar/pialert_latest.tar
+  echo ""
+
+  print_msg "- Uncompressing tar file"
+  tar xf "$INSTALL_DIR/pialert_latest.tar" -C "$INSTALL_DIR" \
+    --exclude='pialert/config/pialert.conf' --exclude='pialert/db/pialert.db' \
+    --exclude='pialert/log/*'  \
+    --checkpoint=100 --checkpoint-action="ttyout=."               2>&1 >> "$LOG"
+  echo ""
+
+  print_msg "- Deleting downloaded tar file..."
+  rm -r "$INSTALL_DIR/pialert_latest.tar"
+}
+
+# ------------------------------------------------------------------------------
+#  Update conf file
+# ------------------------------------------------------------------------------
+update_config() {
+  print_msg "- Config backup..."
+  cp "$PIALERT_HOME/config/pialert.conf" \
+     "$PIALERT_HOME/config/pialert.conf.back"                     2>&1 >> "$LOG"
+
+  print_msg "- Updating config file..."
+  sed -i '/VERSION/d' "$PIALERT_HOME/config/pialert.conf"         2>&1 >> "$LOG"
+  sed -i 's/PA_FRONT_URL/REPORT_DEVICE_URL/g' \
+    "$PIALERT_HOME/config/pialert.conf"                           2>&1 >> "$LOG"
+  
+  if ! grep -Fq PIALERT_PATH "$PIALERT_HOME/config/pialert.conf" ; then
+    echo "PIALERT_PATH    = '$PIALERT_HOME'" >> \
+         "$PIALERT_HOME/config/pialert.conf"
+  fi      
+
+  if ! grep -Fq QUERY_MYIP_SERVER "$PIALERT_HOME/config/pialert.conf" ; then
+    echo "QUERY_MYIP_SERVER = 'http://ipv4.icanhazip.com'" >> \
+         "$PIALERT_HOME/config/pialert.conf"
+  fi      
+}
+
+# ------------------------------------------------------------------------------
+# 
+# ------------------------------------------------------------------------------
+update_db() {
+  return
+}
+
+# ------------------------------------------------------------------------------
+# Test Pi.Alert
+# ------------------------------------------------------------------------------
+test_pialert() {
+  print_msg "- Testing Pi.Alert HW vendors database update process..."
+  print_msg "*** PLEASE WAIT A COUPLE OF MINUTES..."
+  stdbuf -i0 -o0 -e0 \
+    $PYTHON_BIN $PIALERT_HOME/back/pialert.py update_vendors_silent  2>&1 \
+                                                                | tee -ai "$LOG"
+
+  echo ""
+  print_msg "- Testing Pi.Alert Internet IP Lookup..."
+  stdbuf -i0 -o0 -e0 \
+    $PYTHON_BIN $PIALERT_HOME/back/pialert.py internet_IP  2>&1 | tee -ai "$LOG"
+
+  echo ""
+  print_msg "- Testing Pi.Alert Network scan..."
+  print_msg "*** PLEASE WAIT A COUPLE OF MINUTES..."
+  stdbuf -i0 -o0 -e0 \
+    $PYTHON_BIN $PIALERT_HOME/back/pialert.py 1            2>&1 | tee -ai "$LOG"
+}
+
+# ------------------------------------------------------------------------------
+# Check Pi.Alert Installation Path
+# ------------------------------------------------------------------------------
+check_pialert_home() {
+  if [ ! -e "$PIALERT_HOME" ] ; then
+    process_error "Pi.Alert directory dosn't exists: $PIALERT_HOME"
+  fi
+}
+
+# ------------------------------------------------------------------------------
+# Check Python versions available
+# ------------------------------------------------------------------------------
+check_python_version() {
+  print_msg "- Checking Python..."
+  if [ -f /usr/bin/python ] ; then
+    PYTHON_BIN="python"
+  elif [ -f /usr/bin/python3 ] ; then
+    PYTHON_BIN="python3"
+  else
+    process_error "Python NOT installed"
+  fi
+}
+
+
+# ------------------------------------------------------------------------------
+# Move Logfile
+# ------------------------------------------------------------------------------
+move_logfile() {
+  NEWLOG="$PIALERT_HOME/log/$LOG"
+
+  mkdir -p "$PIALERT_HOME/log"
+  mv $LOG $NEWLOG
+
+  LOG="$NEWLOG"
+  NEWLOG=""
+}
+
+# ------------------------------------------------------------------------------
+# Log
+# ------------------------------------------------------------------------------
+log() {
+  echo "$1" | tee -a "$LOG"
+}
+
+log_no_screen () {
+  echo "$1" >> "$LOG"
+}
+
+log_only_screen () {
+  echo "$1"
+}
+
+print_msg() {
+  log_no_screen ""
+  log "$1"
+}
+
+print_superheader() {
+  log ""
+  log "############################################################"
+  log " $1"
+  log "############################################################"  
+}
+
+print_header() {
+  log ""
+  log "------------------------------------------------------------"
+  log " $1"
+  log "------------------------------------------------------------"
+}
+
+process_error() {
+  log ""
+  log "************************************************************"
+  log "************************************************************"
+  log "**             ERROR UPDATING PI.ALERT                    **"
+  log "************************************************************"
+  log "************************************************************"
+  log ""
+  log "$1"
+  log ""
+  log "Use 'cat $LOG' to view update log"
+  log ""
+
+  exit 1
+}
+
+# ------------------------------------------------------------------------------
+  main
+  exit 0