diff --git a/aurora/aurora.sh b/aurora/aurora.sh
index f5b56e3..b1e6268 100644
--- a/aurora/aurora.sh
+++ b/aurora/aurora.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-
+# Version: 1.1.0
 # Exit immediately if a command exits with a non-zero status.
 set -e
 
diff --git a/backup/backup.sh b/backup/backup.sh
index 178cf0a..fb3e788 100644
--- a/backup/backup.sh
+++ b/backup/backup.sh
@@ -1,5 +1,5 @@
 #!/bin/bash
-
+# Version: 1.0.0
 # ==============================================================================
 # SAP HANA Backup Script
 #
diff --git a/clean.sh b/clean.sh
index 4caf937..52b2b2a 100644
--- a/clean.sh
+++ b/clean.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Version: 1.1.0
 
 # Check if any arguments were provided
 if [ "$#" -eq 0 ]; then
diff --git a/hdb_keymanager.sh b/hdb_keymanager.sh
index 7907908..ebcf77a 100644
--- a/hdb_keymanager.sh
+++ b/hdb_keymanager.sh
@@ -1,4 +1,5 @@
 #!/bin/bash
+# Version: 1.2.1
 
 # A script to interactively manage SAP HANA hdbuserstore keys, with testing.
 
diff --git a/install.sh b/install.sh
index ed103c8..a3cca23 100644
--- a/install.sh
+++ b/install.sh
@@ -6,6 +6,7 @@
 # configuration file. The user can select a package, and the script
 # will download the corresponding files. It includes a feature to show
 # a diff and ask for confirmation before overwriting existing config files.
+# It can also check for updates to already-installed scripts.
 
 # --- Functions ---
 
@@ -14,18 +15,41 @@ log() {
     echo "[$1] $2"
 }
 
+# New function to get the version from a local script file.
+# It reads the first 5 lines and extracts the version number.
+get_local_version() {
+    local file_path="$1"
+    if [[ -f "${file_path}" ]]; then
+        # Grep for the version line, then use awk to get the last field.
+        head -n 5 "${file_path}" | grep -m 1 "^# Version:" | awk '{print $NF}'
+    else
+        echo "0.0.0" # Return a base version if file doesn't exist.
+    fi
+}
+
+# New function to compare two version strings (e.g., "1.2.0" vs "1.10.0").
+# Returns 0 if v1 is newer, 1 if they are the same or v2 is newer.
+is_version_greater() {
+    local v1=$1
+    local v2=$2
+    # Use sort's version sorting capability to find the "highest" version.
+    # If the highest version is v1, then v1 > v2.
+    if [[ "$(printf '%s\n' "$v1" "$v2" | sort -V | head -n 1)" != "$v1" ]]; then
+        return 0 # v1 is greater
+    else
+        return 1 # v1 is not greater (equal or less)
+    fi
+}
+
 # --- Main Logic ---
 
 # Generate a unique temporary filename with a timestamp.
-# This file will hold the package definitions downloaded from the remote source.
 conf_file="packages.conf.$(date +%Y%m%d%H%M%S)"
 
-# Set up a trap to delete the temporary file on exit. This ensures that
-# no matter how the script exits (normally, with an error, or via Ctrl+C),
-# the temporary file is cleaned up.
+# Set up a trap to delete the temporary file on exit.
 trap 'rm -f "${conf_file}"' EXIT
 
-# Download the configuration file before sourcing it.
+# Download the configuration file.
 log "🔄" "Downloading configuration file..."
 if ! curl -fsSL -o "${conf_file}" "https://git.technopunk.space/tomi/Scripts/raw/branch/main/packages.conf"; then
     log "❌" "Error: Failed to download packages.conf. Exiting."
@@ -34,26 +58,55 @@ fi
 log "✅" "Configuration file downloaded successfully."
 
 # Source the configuration file to load the SCRIPT_PACKAGES associative array.
-# The file is expected to contain a declaration like:
-# declare -A SCRIPT_PACKAGES=( [key1]="url1 url2" [key2]="url3" )
 source "${conf_file}"
 
-# --- User Interface ---
+# --- Update Check & User Interface ---
 
 echo "-------------------------------------"
 echo "        Script Downloader            "
 echo "-------------------------------------"
 
-# Create an array of options from the package names (the keys of our map).
-options=("${!SCRIPT_PACKAGES[@]}")
+# Create an array of options from the package names.
+# We will modify this array to show installation and update status.
+declare -a options
+package_keys=("${!SCRIPT_PACKAGES[@]}")
+
+log "🔎" "Checking for updates..."
+for key in "${package_keys[@]}"; do
+    # The config format is now "VERSION|URL1 URL2..."
+    config_value="${SCRIPT_PACKAGES[$key]}"
+    remote_version=$(echo "${config_value}" | cut -d'|' -f1)
+    
+    # Get just the URLs and assume the first URL is the main script to check.
+    urls=$(echo "${config_value}" | cut -d'|' -f2-)
+    read -r -a url_array <<< "$urls"
+    main_script_filename=$(basename "${url_array[0]}")
+
+    # Get the local version of the main script file.
+    local_version=$(get_local_version "${main_script_filename}")
+
+    status=""
+    if [[ -f "${main_script_filename}" ]]; then
+        status=" (Installed: v${local_version})"
+        # Compare versions
+        if is_version_greater "$remote_version" "$local_version"; then
+            status+=" [Update available: v${remote_version}]"
+        fi
+    fi
+    options+=("${key}${status}")
+done
+echo
+
 options+=("Quit") # Add a Quit option to the menu.
 
 # Set the prompt for the select menu.
-PS3="Please enter the number of the script/package you want to download: "
+PS3="Please enter your choice: "
 
-# Display the menu and handle user input. The `select` statement is a
-# convenient way to create interactive menus in shell scripts.
-select choice in "${options[@]}"; do
+# Display the menu and handle user input.
+select choice_with_status in "${options[@]}"; do
+    # Strip the status message from the choice for key lookup
+    choice=$(echo "${choice_with_status}" | sed 's/ (.*//')
+    
     case "${choice}" in
         "Quit")
             log "👋" "Exiting."
@@ -63,38 +116,35 @@ select choice in "${options[@]}"; do
             # Check if the user's choice is a valid package name.
             if [[ -n "${SCRIPT_PACKAGES[$choice]}" ]]; then
                 echo
-                log "⬇️" "Downloading package: '${choice}'..."
+                log "⬇️" "Processing package: '${choice}'..."
+                
+                # Get the config value and split it into version and URLs
+                config_value="${SCRIPT_PACKAGES[$choice]}"
+                remote_version=$(echo "${config_value}" | cut -d'|' -f1)
+                urls_to_download=$(echo "${config_value}" | cut -d'|' -f2-)
                 
-                # Get the space-separated list of URLs for the chosen package.
-                urls_to_download="${SCRIPT_PACKAGES[$choice]}"
-
-                # Read the URLs into an array for safer handling.
                 read -r -a urls_to_download_array <<< "$urls_to_download"
 
-                # Loop through each URL in the list and download the file.
                 for url in "${urls_to_download_array[@]}"; do
                     filename=$(basename "${url}")
                     # If it's a .conf file AND it already exists, ask to overwrite.
                     if [[ "${filename}" == *.conf && -f "${filename}" ]]; then
                         log "->" "Found existing config file: '${filename}'."
-                        # Create a temporary file to download the new version for comparison.
                         tmp_file=$(mktemp)
 
-                        # Download the new version silently to the temp file.
                         if curl -fsSL -o "${tmp_file}" "${url}"; then
                             log "🔎" "Comparing versions..."
                             echo "-------------------- DIFF START --------------------"
-                            # Show a colorized diff if 'colordiff' is available, otherwise use regular 'diff'.
                             if command -v colordiff &> /dev/null; then
                                 colordiff -u "${filename}" "${tmp_file}"
                             else
-                                diff --color=always -u "${filename}" "${tmp_file}"
+                                # Attempt to use diff's color option, which is common.
+                                diff --color=always -u "${filename}" "${tmp_file}" 2>/dev/null || diff -u "${filename}" "${tmp_file}"
                             fi
                             echo "--------------------- DIFF END ---------------------"
                             
-                            # Ask the user for confirmation before overwriting.
                             read -p "Do you want to overwrite '${filename}'? (y/N) " -n 1 -r REPLY
-                            echo # Move to a new line for cleaner output.
+                            echo
 
                             if [[ $REPLY =~ ^[Yy]$ ]]; then
                                 mv "${tmp_file}" "${filename}"
@@ -105,15 +155,13 @@ select choice in "${options[@]}"; do
                             fi
                         else
                             log "❌" "Error: Failed to download new version of '${filename}' for comparison."
-                            # Clean up the temp file on failure.
                             rm -f "${tmp_file}"
                         fi
                     else
-                        # Original download logic for all other files (or new .conf files).
+                        # Original download logic for all other files.
                         log "->" "Downloading '${filename}'..."
                         if curl -fsSL -o "${filename}" "${url}"; then
                             log "✅" "Successfully downloaded '${filename}'."
-                            # If the downloaded file is a shell script, make it executable.
                             if [[ "${filename}" == *.sh ]]; then
                                 chmod +x "${filename}"
                                 log "🤖" "Made '${filename}' executable."
@@ -124,10 +172,9 @@ select choice in "${options[@]}"; do
                     fi
                 done
                 echo
-                log "📦" "Package download complete."
-                break # Exit the select loop after a successful operation.
+                log "📦" "Package processing complete."
+                break
             else
-                # The user entered an invalid number.
                 echo "Invalid selection. Please try again."
             fi
             ;;
diff --git a/packages.conf b/packages.conf
index bf7a8e3..092569a 100644
--- a/packages.conf
+++ b/packages.conf
@@ -2,13 +2,14 @@
 #
 # This file contains the configuration for the script downloader.
 # The `SCRIPT_PACKAGES` associative array maps a package name to a
-# space-separated list of URLs to download.
+# pipe-separated string: "<version>|<space-separated list of URLs>".
 
 declare -A SCRIPT_PACKAGES
 
-SCRIPT_PACKAGES["Aurora Suite"]="https://git.technopunk.space/tomi/Scripts/raw/branch/main/aurora/aurora.sh https://git.technopunk.space/tomi/Scripts/raw/branch/main/aurora/aurora.conf"
-SCRIPT_PACKAGES["Backup Suite"]="https://git.technopunk.space/tomi/Scripts/raw/branch/main/backup/backup.sh https://git.technopunk.space/tomi/Scripts/raw/branch/main/backup/backup.conf"
-SCRIPT_PACKAGES["Key Manager"]="https://git.technopunk.space/tomi/Scripts/raw/branch/main/hdb_keymanager.sh"
-SCRIPT_PACKAGES["File Cleaner"]="https://git.technopunk.space/tomi/Scripts/raw/branch/main/clean.sh"
-# Example: To add another single script later, just add a new line:
-# SCRIPT_PACKAGES["My Other Script"]="https://path/to/my-other-script.sh"
+# The version should match the "# Version: x.x.x" line in the main script file.
+SCRIPT_PACKAGES["Aurora Suite"]="1.1.0|https://git.technopunk.space/tomi/Scripts/raw/branch/main/aurora/aurora.sh https://git.technopunk.space/tomi/Scripts/raw/branch/main/aurora/aurora.conf"
+SCRIPT_PACKAGES["Backup Suite"]="1.0.0|https://git.technopunk.space/tomi/Scripts/raw/branch/main/backup/backup.sh https://git.technopunk.space/tomi/Scripts/raw/branch/main/backup/backup.conf"
+SCRIPT_PACKAGES["Key Manager"]="1.2.1|https://git.technopunk.space/tomi/Scripts/raw/branch/main/hdb_keymanager.sh"
+SCRIPT_PACKAGES["File Cleaner"]="1.1.0|https://git.technopunk.space/tomi/Scripts/raw/branch/main/clean.sh"
+# Example: Add a new script with its version.
+# SCRIPT_PACKAGES["My Other Script"]="1.0.0|https://path/to/my-other-script.sh"