diff --git a/README.md b/README.md
index 67f8907..76f5062 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 PrestaShop is an Open Source e-commerce web application, committed to providing the best shopping cart experience for both merchants and customers. It is written in PHP, is highly customizable, supports all the major payment services, is translated in many languages and localized for many countries, has a fully responsive design (both front and back office), etc.
 
-**Shipped version:** 1.7.8.1~ynh1
+**Shipped version:** 1.7.8.3~ynh1
 
 **Demo:** https://demo.prestashop.com/#/en/front
 
diff --git a/README_fr.md b/README_fr.md
index d895e29..076b072 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -13,7 +13,7 @@ Si vous n'avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) pour
 
 PrestaShop is an Open Source e-commerce web application, committed to providing the best shopping cart experience for both merchants and customers. It is written in PHP, is highly customizable, supports all the major payment services, is translated in many languages and localized for many countries, has a fully responsive design (both front and back office), etc.
 
-**Version incluse :** 1.7.8.1~ynh1
+**Version incluse :** 1.7.8.3~ynh1
 
 **Démo :** https://demo.prestashop.com/#/en/front
 
diff --git a/check_process b/check_process
index cb66926..a94739b 100644
--- a/check_process
+++ b/check_process
@@ -14,7 +14,7 @@
 		#upgrade=1	from_commit=CommitHash
 		backup_restore=1
 		multi_instance=1
-		change_url=0
+		change_url=1
 ;;; Options
 Email=
 Notification=none
diff --git a/conf/app.src b/conf/app.src
index 642fb9c..2858c70 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/PrestaShop/PrestaShop/releases/download/1.7.8.1/prestashop_1.7.8.1.zip
-SOURCE_SUM=fd375b9aa3452f83a65a03403fa2c38fd6c3bc50ae058ed0467b5a37fd51e7e9
+SOURCE_URL=https://github.com/PrestaShop/PrestaShop/releases/download/1.7.8.3/prestashop_1.7.8.3.zip
+SOURCE_SUM=9be5c1bbb12705574f780a86230a0f2c0f459e29f26d44fba4957250650a12ec
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=zip
 SOURCE_IN_SUBDIR=false
diff --git a/manifest.json b/manifest.json
index 3434ebe..a3f06de 100644
--- a/manifest.json
+++ b/manifest.json
@@ -6,7 +6,7 @@
         "en": "Create a E-commerce Website",
         "fr": "Créer un site ecommerce"
     },
-    "version": "1.7.8.1~ynh1",
+    "version": "1.7.8.3~ynh1",
     "url": "https://www.prestashop.com/",
     "upstream": {
         "license": "OSL-3.0",
diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..ff06606
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,105 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# RETRIEVE ARGUMENTS
+#=================================================
+
+old_domain=$YNH_APP_OLD_DOMAIN
+old_path=$YNH_APP_OLD_PATH
+
+new_domain=$YNH_APP_NEW_DOMAIN
+new_path=$YNH_APP_NEW_PATH
+
+app=$YNH_APP_INSTANCE_NAME
+
+#=================================================
+# LOAD SETTINGS
+#=================================================
+ynh_script_progression --message="Loading installation settings..." --weight=1
+
+# Needed for helper "ynh_add_nginx_config"
+final_path=$(ynh_app_setting_get --app=$app --key=final_path)
+
+#=================================================
+# BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
+#=================================================
+ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=1
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# Remove the new domain config file, the remove script won't do it as it doesn't know yet its location.
+	ynh_secure_remove --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
+
+	# Restore it if the upgrade fails
+	ynh_restore_upgradebackup
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# CHECK WHICH PARTS SHOULD BE CHANGED
+#=================================================
+
+change_domain=0
+if [ "$old_domain" != "$new_domain" ]
+then
+	change_domain=1
+fi
+
+change_path=0
+if [ "$old_path" != "$new_path" ]
+then
+	change_path=1
+fi
+
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1
+
+nginx_conf_path=/etc/nginx/conf.d/$old_domain.d/$app.conf
+
+# Change the path in the NGINX config file
+if [ $change_path -eq 1 ]
+then
+	# Make a backup of the original NGINX config file if modified
+	ynh_backup_if_checksum_is_different --file="$nginx_conf_path"
+	# Set global variables for NGINX helper
+	domain="$old_domain"
+	path_url="$new_path"
+	# Create a dedicated NGINX config
+	ynh_add_nginx_config
+fi
+
+# Change the domain for NGINX
+if [ $change_domain -eq 1 ]
+then
+	# Delete file checksum for the old conf file location
+	ynh_delete_file_checksum --file="$nginx_conf_path"
+	mv $nginx_conf_path /etc/nginx/conf.d/$new_domain.d/$app.conf
+	# Store file checksum for the new config file location
+	ynh_store_file_checksum --file="/etc/nginx/conf.d/$new_domain.d/$app.conf"
+fi
+
+#=================================================
+# RELOAD NGINX
+#=================================================
+ynh_script_progression --message="Reloading NGINX web server..." --weight=1
+
+ynh_systemd_action --service_name=nginx --action=reload
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/install b/scripts/install
index adc677c..680ad2f 100644
--- a/scripts/install
+++ b/scripts/install
@@ -23,6 +23,7 @@ ynh_abort_if_errors
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
 is_public=$YNH_APP_ARG_IS_PUBLIC
+phpversion=$YNH_PHP_VERSION
 
 app=$YNH_APP_INSTANCE_NAME
 
diff --git a/scripts/remove b/scripts/remove
index d602496..dfde978 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -30,14 +30,6 @@ ynh_script_progression --message="Removing the MySQL database..." --weight=2
 # Remove a database if it exists, along with the associated user
 ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
 
-#=================================================
-# REMOVE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Removing dependencies..." --weight=1
-
-# Remove metapackage and its dependencies
-ynh_remove_app_dependencies
-
 #=================================================
 # REMOVE APP MAIN DIR
 #=================================================
@@ -62,6 +54,14 @@ ynh_script_progression --message="Removing PHP-FPM configuration..." --weight=1
 # Remove the dedicated PHP-FPM config
 ynh_remove_fpm_config
 
+#=================================================
+# REMOVE DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Removing dependencies..." --weight=1
+
+# Remove metapackage and its dependencies
+ynh_remove_app_dependencies
+
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 8c0a35a..3adfc4c 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -21,6 +21,7 @@ path_url=$(ynh_app_setting_get --app=$app --key=path)
 admin=$(ynh_app_setting_get --app=$app --key=admin)
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+phpversion=$YNH_PHP_VERSION
 
 #=================================================
 # CHECK VERSION
@@ -86,7 +87,7 @@ then
 	ynh_script_progression --message="Upgrading source files..." --weight=3
 
 	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
+	ynh_setup_source --dest_dir="$final_path" --keep="$final_path/img $final_path/override"
 fi
 
 chmod 750 "$final_path"
@@ -116,6 +117,15 @@ ynh_script_progression --message="Upgrading PHP-FPM configuration..." --weight=1
 # Create a dedicated PHP-FPM config
 ynh_add_fpm_config
 
+#=================================================
+# PHP-FPM CONFIGURATION
+#=================================================
+# ynh_script_progression --message="Upgrading database..." --weight=1
+
+# pushd $final_path
+# 	php$phpversion ./install/upgrade/upgrade.php
+# popd
+
 #=================================================
 # RELOAD NGINX
 #=================================================