diff --git a/scripts/upgrade b/scripts/upgrade
index d99c247..75de335 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -3,6 +3,8 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
+upgrade_type=$(ynh_check_app_version_changed)
+
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
@@ -146,173 +148,177 @@ then
     fi
 fi
 
-ynh_script_progression --message="Upgrading $app..." --weight=3
-
-# Set write access for the following commands
-chown -R $app: "$install_dir" "$data_dir"
-
-# Print the current version number of Nextcloud
-exec_occ -V
-
-
-# Upgrade may fail if this app is enabled
-# Take all apps enabled, and check if mail is one of them
-# Then temporary disable the mail app
-mail_app_must_be_reactived=0
-
-if exec_occ app:list | awk '/Enabled/{f=1;next} /Disabled/{f=0} f' | grep -q -w mail; then
-    exec_occ app:disable mail
-        mail_app_must_be_reactived=1
-fi
-
-# While the current version is not the last version, do an upgrade
-while [ "$last_version" != "$current_version" ]
-do
-    next_major_version="$(( $current_major_version + 1 ))"
-    if [[ "$next_major_version" -ge "$last_major_version" ]]; then
-        ynh_print_info --message="Upgrading to Nextcloud $last_version"
-        cp -a ../sources/patches_last_version/* ../sources/patches
-        source_id="main"
-    else
-        ynh_print_info --message="Upgrading to Nextcloud $next_major_version"
-        source_id="$next_major_version"
-    fi
-
-    # Create a temporary directory
-    tmpdir="${install_dir}__tmp_upgrade"
-
-    ynh_setup_source --dest_dir="$tmpdir" --source_id="$source_id"
-
-    # Backup the config file in the temp dir
-    cp -a "$install_dir/config/config.php" "$tmpdir/config/config.php"
-
-    # Enable maintenance mode
-    exec_occ maintenance:mode --on
-
-    # Backup 3rd party applications from the current Nextcloud
-    # But do not overwrite if there is any upgrade
-    # (apps directory already exists in Nextcloud archive)
-    (
-    cd $install_dir/apps
-    for nc_app_dir in */
-    do
-      if [ ! -d "$tmpdir/apps/$nc_app_dir" ]
-      then
-        cp -a "$nc_app_dir" "$tmpdir/apps/$nc_app_dir"
-      fi
-    done
-    )
-
-    # Replace the old Nextcloud by the new one
-    ynh_secure_remove --file="$install_dir"
-    mv "$tmpdir" "$install_dir"
+if [ "$upgrade_type" == "UPGRADE_APP" ]
+then
+    ynh_script_progression --message="Upgrading $app..." --weight=3
 
     # Set write access for the following commands
     chown -R $app: "$install_dir" "$data_dir"
 
-    # Upgrade Nextcloud (SUCCESS = 0, UP_TO_DATE = 3)
-    exec_occ maintenance:mode --off
-    exec_occ upgrade \
-    || [ $? -eq 3 ] || ynh_die --message="Unable to upgrade $app"
-
-    # Get the new current version number
-    current_version=$(grep OC_VersionString "$install_dir/version.php" | cut -d\' -f2)
-    current_major_version=${current_version%%.*}
-
     # Print the current version number of Nextcloud
     exec_occ -V
-done
 
-exec_occ db:add-missing-indices -n
-exec_occ db:add-missing-columns -n
-exec_occ db:add-missing-primary-keys -n
-exec_occ db:convert-filecache-bigint -n
 
-#=================================================
-# CONFIGURE NEXTCLOUD
-#=================================================
-ynh_script_progression --message="Reconfiguring $app..." --weight=9
+    # Upgrade may fail if this app is enabled
+    # Take all apps enabled, and check if mail is one of them
+    # Then temporary disable the mail app
+    mail_app_must_be_reactived=0
 
-# Verify the checksum and backup the file if it's different
-ynh_backup_if_checksum_is_different --file="$install_dir/config/config.php"
+    if exec_occ app:list | awk '/Enabled/{f=1;next} /Disabled/{f=0} f' | grep -q -w mail; then
+        exec_occ app:disable mail
+        mail_app_must_be_reactived=1
+    fi
 
-nc_conf="${install_dir}/config.json"
-ynh_add_config --template="config.json" --destination="$nc_conf"
+    # While the current version is not the last version, do an upgrade
+    while [ "$last_version" != "$current_version" ]
+    do
 
-# Reneable the mail app
-if [ $mail_app_must_be_reactived -eq 1 ]; then
-    exec_occ app:enable mail
-fi
+        next_major_version="$(( $current_major_version + 1 ))"
+        if [[ "$next_major_version" -ge "$last_major_version" ]]; then
+            ynh_print_info --message="Upgrading to Nextcloud $last_version"
+            cp -a ../sources/patches_last_version/* ../sources/patches
+            source_id="main"
+        else
+            ynh_print_info --message="Upgrading to Nextcloud $next_major_version"
+            source_id="$next_major_version"
+        fi
 
-# Ensure that UpdateNotification app is disabled
-exec_occ app:disable updatenotification
+        # Create a temporary directory
+        tmpdir="${install_dir}__tmp_upgrade"
 
-# Enable LDAP plugin
-exec_occ app:enable user_ldap
+        ynh_setup_source --dest_dir="$tmpdir" --source_id="$source_id"
 
-# Update all installed apps
-exec_occ app:update --all
+        # Backup the config file in the temp dir
+        cp -a "$install_dir/config/config.php" "$tmpdir/config/config.php"
 
-# move the logs from the data_dir to the standard /var/log
-# it would be better in the ENSURE DOWNWARD COMPATIBILITY section
-# but it must be after the exec_occ() definition, so it's here
-if [ -f "$data_dir/data/nextcloud.log" ]; then
-    mkdir -p "/var/log/$app"
-    chmod 750 "/var/log/$app"
-    mv "$data_dir"/data/nextcloud.log* "/var/log/$app"
-    # adapt the nextcloud config
-    exec_occ config:system:set logfile --value="/var/log/$app/nextcloud.log"
-fi
+        # Enable maintenance mode
+        exec_occ maintenance:mode --on
 
-# Load the config file in nextcloud
-exec_occ config:import "$nc_conf"
+        # Backup 3rd party applications from the current Nextcloud
+        # But do not overwrite if there is any upgrade
+        # (apps directory already exists in Nextcloud archive)
+        (
+        cd $install_dir/apps
+        for nc_app_dir in */
+        do
+          if [ ! -d "$tmpdir/apps/$nc_app_dir" ]
+          then
+            cp -a "$nc_app_dir" "$tmpdir/apps/$nc_app_dir"
+          fi
+        done
+        )
 
-# Then remove the config file
-ynh_secure_remove --file="$nc_conf"
+        # Replace the old Nextcloud by the new one
+        ynh_secure_remove --file="$install_dir"
+        mv "$tmpdir" "$install_dir"
 
-#=================================================
-# ALLOW USERS TO DISCONNECT FROM NEXTCLOUD
-#=================================================
+        # Set write access for the following commands
+        chown -R $app: "$install_dir" "$data_dir"
 
-# Add dynamic logout URL to the config
-exec_occ config:system:get logout_url >/dev/null 2>&1 \
-|| echo "
-//-YunoHost-
-// set logout_url according to main domain
-\$main_domain = exec('cat /etc/yunohost/current_host');
-\$CONFIG['logout_url'] = 'https://'.\$main_domain.'/yunohost/sso/?action=logout';
-//-YunoHost-
-" >> "$install_dir/config/config.php"
+        # Upgrade Nextcloud (SUCCESS = 0, UP_TO_DATE = 3)
+        exec_occ maintenance:mode --off
+        exec_occ upgrade \
+        || [ $? -eq 3 ] || ynh_die --message="Unable to upgrade $app"
 
-#=================================================
-# CHANGE HOSTNAME FOR ACTIVITY NOTIFICATIONS
-#=================================================
+        # Get the new current version number
+        current_version=$(grep OC_VersionString "$install_dir/version.php" | cut -d\' -f2)
+        current_major_version=${current_version%%.*}
 
-exec_occ config:system:set overwrite.cli.url --value="https://${domain}${path}"
-
-#=================================================
-# MOUNT HOME FOLDERS AS EXTERNAL STORAGE
-#=================================================
-
-# Enable External Storage and create local mount to home folder as needed
-if [ $user_home -eq 1 ]; then
-    exec_occ app:enable files_external
-    exec_occ files_external:list --output=json \
-    | grep -q '"storage":"\\\\OC\\\\Files\\\\Storage\\\\Local"' \
-    || create_external_storage "/home/\$user" "Home"
-    # Iterate over users to extend their home folder permissions
-    for u in $(ynh_user_list); do
-    setfacl --modify g:$app:rwx "/home/$u" || true
+        # Print the current version number of Nextcloud
+        exec_occ -V
     done
+
+    exec_occ db:add-missing-indices -n
+    exec_occ db:add-missing-columns -n
+    exec_occ db:add-missing-primary-keys -n
+    exec_occ db:convert-filecache-bigint -n
+
+    #=================================================
+    # CONFIGURE NEXTCLOUD
+    #=================================================
+    ynh_script_progression --message="Reconfiguring $app..." --weight=9
+
+    # Verify the checksum and backup the file if it's different
+    ynh_backup_if_checksum_is_different --file="$install_dir/config/config.php"
+
+    nc_conf="${install_dir}/config.json"
+    ynh_add_config --template="config.json" --destination="$nc_conf"
+
+    # Reneable the mail app
+    if [ $mail_app_must_be_reactived -eq 1 ]; then
+        exec_occ app:enable mail
+    fi
+
+    # Ensure that UpdateNotification app is disabled
+    exec_occ app:disable updatenotification
+
+    # Enable LDAP plugin
+    exec_occ app:enable user_ldap
+
+    # Update all installed apps
+    exec_occ app:update --all
+
+    # move the logs from the data_dir to the standard /var/log
+    # it would be better in the ENSURE DOWNWARD COMPATIBILITY section
+    # but it must be after the exec_occ() definition, so it's here
+    if [ -f "$data_dir/data/nextcloud.log" ]; then
+        mkdir -p "/var/log/$app"
+        chmod 750 "/var/log/$app"
+        mv "$data_dir"/data/nextcloud.log* "/var/log/$app"
+        # adapt the nextcloud config
+        exec_occ config:system:set logfile --value="/var/log/$app/nextcloud.log"
+    fi
+
+    # Load the config file in nextcloud
+    exec_occ config:import "$nc_conf"
+
+    # Then remove the config file
+    ynh_secure_remove --file="$nc_conf"
+
+    #=================================================
+    # ALLOW USERS TO DISCONNECT FROM NEXTCLOUD
+    #=================================================
+
+    # Add dynamic logout URL to the config
+    exec_occ config:system:get logout_url >/dev/null 2>&1 \
+    || echo "
+    //-YunoHost-
+    // set logout_url according to main domain
+    \$main_domain = exec('cat /etc/yunohost/current_host');
+    \$CONFIG['logout_url'] = 'https://'.\$main_domain.'/yunohost/sso/?action=logout';
+    //-YunoHost-
+    " >> "$install_dir/config/config.php"
+
+    #=================================================
+    # CHANGE HOSTNAME FOR ACTIVITY NOTIFICATIONS
+    #=================================================
+
+    exec_occ config:system:set overwrite.cli.url --value="https://${domain}${path}"
+
+    #=================================================
+    # MOUNT HOME FOLDERS AS EXTERNAL STORAGE
+    #=================================================
+
+    # Enable External Storage and create local mount to home folder as needed
+    if [ $user_home -eq 1 ]; then
+        exec_occ app:enable files_external
+        exec_occ files_external:list --output=json \
+        | grep -q '"storage":"\\\\OC\\\\Files\\\\Storage\\\\Local"' \
+        || create_external_storage "/home/\$user" "Home"
+        # Iterate over users to extend their home folder permissions
+        for u in $(ynh_user_list); do
+        setfacl --modify g:$app:rwx "/home/$u" || true
+        done
+    fi
+
+    #=================================================
+    # STORE THE CHECKSUM OF THE CONFIG FILE
+    #=================================================
+
+    # Calculate and store the config file checksum into the app settings
+    ynh_store_file_checksum --file="${install_dir}/config/config.php"
 fi
 
-#=================================================
-# STORE THE CHECKSUM OF THE CONFIG FILE
-#=================================================
-
-# Calculate and store the config file checksum into the app settings
-ynh_store_file_checksum --file="${install_dir}/config/config.php"
-
 #=================================================
 # REGEN PERMISSIONS
 #=================================================