diff --git a/scripts/change_url b/scripts/change_url
index d228ada..17b4b74 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -141,12 +141,16 @@ else
 fi
 ynh_store_file_checksum --file="$config"
 
+chmod 600 $final_path/lufi.conf
+chown $app:$app $final_path/lufi.conf
+
 #=================================================
 # UPDATE SSOWAT
 #=================================================
-ynh_script_progression --message="Reconfigure SSOwat"
+ynh_script_progression --message="Reconfiguring permissions..."
+
+ynh_permission_update --permission="main" --add="visitors"
 
-ynh_app_setting_set $app unprotected_uris "/"
 if [ $is_public -eq 0 ]
 then
 	if [ "$path_url" == "/" ]; then
diff --git a/scripts/install b/scripts/install
index bea93a0..0775063 100644
--- a/scripts/install
+++ b/scripts/install
@@ -75,6 +75,14 @@ ynh_script_progression --message="Installing dependencies..."
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Configuring system user..."
+
+# Create a system user
+ynh_system_user_create --username=$app
+
 #=================================================
 # CREATE A POSTGRESQL DATABASE
 #=================================================
@@ -105,14 +113,6 @@ ynh_script_progression --message="Configuring NGINX web server..."
 # Create a dedicated NGINX config
 ynh_add_nginx_config max_file_size
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Configuring system user..."
-
-# Create a system user
-ynh_system_user_create --username=$app
-
 #=================================================
 # SPECIFIC SETUP
 #=================================================
@@ -143,6 +143,9 @@ fi
 
 ynh_store_file_checksum --file="$config"
 
+chmod 600 $final_path/lufi.conf
+chown $app:$app $final_path/lufi.conf
+
 #=================================================
 # INSTALL LUFI
 #=================================================
@@ -157,9 +160,6 @@ popd
 #=================================================
 ynh_script_progression --message="Setuping a cron..."
 
-# cp ../conf/cron_lufi /etc/cron.d/$app
-# ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path/" --target_file="/etc/cron.d/$app"
-# ynh_replace_string --match_string="__USER__" --replace_string="$app" --target_file="/etc/cron.d/$app"
 ynh_add_config --template="../conf/cron_lufi" --destination="/etc/cron.d/$app"
 chmod +x $final_path/script/lufi
 
diff --git a/scripts/remove b/scripts/remove
index 7640fa9..0cca7d3 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -83,16 +83,6 @@ ynh_script_progression --message="Removing logrotate configuration..."
 # Remove the app-specific logrotate config
 ynh_remove_logrotate
 
-#=================================================
-# CLOSE A PORT
-#=================================================
-
-if yunohost firewall list | grep -q "\- $port$"
-then
-	ynh_script_progression --message="Closing port $port..."
-	ynh_exec_warn_less yunohost firewall disallow TCP $port
-fi
-
 #=================================================
 # SPECIFIC REMOVE
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 8790bf1..a6153c4 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -53,13 +53,6 @@ ynh_script_progression --message="Restoring NGINX configuration..."
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# RESTORE THE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Restoring the app main directory..."
-
-ynh_restore_file --origin_path="$final_path"
-
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
@@ -68,6 +61,13 @@ ynh_script_progression --message="Recreating the dedicated system user..."
 # Create the dedicated user (if not existing)
 ynh_system_user_create --username=$app
 
+#=================================================
+# RESTORE THE APP MAIN DIR
+#=================================================
+ynh_script_progression --message="Restoring the app main directory..."
+
+ynh_restore_file --origin_path="$final_path"
+
 #=================================================
 # RESTORE USER RIGHTS
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 64d2333..4713818 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -39,30 +39,28 @@ upgrade_type=$(ynh_check_app_version_changed)
 #=================================================
 ynh_script_progression --message="Ensuring downward compatibility..."
 
+# If db_name doesn't exist, create it
+if [ -z "$db_name" ]; then
+	db_name=$(ynh_sanitize_dbid --db_name=$app)
+	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
+fi
+
 # If final_path doesn't exist, create it
 if [ -z "$final_path" ]; then
 	final_path=/var/www/$app
 	ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 fi
 
-if [ -z "$db_pwd" ]; then
-	# Need to install new dependencies before creating the new database
-	need_migration_from_sqlite_to_psql=1
-else
-	need_migration_from_sqlite_to_psql=0
-fi
-
 if [ -z "$max_file_size" ]; then
 	max_file_size=100 # 100 Mo
 	ynh_app_setting_set --app=$app --key=max_file_size --value=$max_file_size
 fi
 
-# Make app public if necessary
-if [ $is_public -eq 1 ]
-then
-	# Everyone can access the app.
-	# The "main" permission is automatically created before the install script.
-	ynh_permission_update --permission="main" --add="visitors"
+# Cleaning legacy permissions
+if ynh_legacy_permissions_exists; then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
 fi
 
 #=================================================
@@ -87,7 +85,15 @@ ynh_abort_if_errors
 #=================================================
 ynh_script_progression --message="Stopping a systemd service..."
 
-ynh_systemd_action --service_name=$app --action="stop" --log_path="$final_path/log/production.log"
+ynh_systemd_action --service_name=$app --action=stop --log_path="$final_path/log/production.log"
+
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
+ynh_script_progression --message="Making sure dedicated system user exists..."
+
+# Create a dedicated user (if not existing)
+ynh_system_user_create --username=$app
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -116,36 +122,10 @@ ynh_script_progression --message="Upgrading dependencies..."
 
 ynh_exec_warn_less ynh_install_app_dependencies $pkg_dependencies
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Making sure dedicated system user exists..."
-
-# Create a dedicated user (if not existing)
-ynh_system_user_create --username=$app
-
-#=================================================
-# SPECIFIC UPGRADE
-#=================================================
-# CREATE A POSTGRESQL DATABASE IF NEEDED
-#=================================================
-
-if [ $need_migration_from_sqlite_to_psql -eq 1 ]; then
-	ynh_print_info --message="Creating a PostgreSQL database..."
-	# Create postgresql database
-	ynh_psql_test_if_first_run
-	db_name=$(ynh_sanitize_dbid --db_name=$app)
-	db_user=$db_name
-	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-	# Initialize database and store postgres password for upgrade
-	ynh_psql_setup_db --db_user=$db_user --db_name=$db_name
-	db_pwd=$(ynh_app_setting_get --app=$app --key=psqlpwd) # Password created in ynh_psql_setup_db function
-fi
-
 #=================================================
 # SETUP LUFI
 #=================================================
-ynh_script_progression --message="Configuring lufi..."
+ynh_script_progression --message="Configuring Lufi..."
 
 config=${final_path}/lufi.conf
 ynh_backup_if_checksum_is_different --file="$config"
@@ -171,6 +151,9 @@ fi
 
 ynh_store_file_checksum --file="$config"
 
+chmod 600 $final_path/lufi.conf
+chown $app:$app $final_path/lufi.conf
+
 #=================================================
 # BUILD LUFI
 #=================================================
@@ -200,9 +183,7 @@ popd
 #=================================================
 ynh_script_progression --message="Setuping cron..."
 
-cp ../conf/cron_lufi /etc/cron.d/$app
-ynh_replace_string --match_string="__FINALPATH__" --replace_string="$final_path/" --target_file="/etc/cron.d/$app"
-ynh_replace_string --match_string="__USER__" --replace_string="$app" --target_file="/etc/cron.d/$app"
+ynh_add_config --template="../conf/cron_lufi" --destination="/etc/cron.d/$app"
 chmod +x $final_path/script/lufi
 
 #=================================================
@@ -236,12 +217,12 @@ ynh_add_systemd_config
 ynh_script_progression --message="Securing files and directories..."
 
 # Set permissions on app files
-chown -R $app: $final_path
+chown -R $app:$app $final_path
 
 #=================================================
 # SETUP SSOWAT
 #=================================================
-ynh_script_progression --message="Upgrading SSOwat configuration..."
+ynh_script_progression --message="Upgrading permissions..."
 
 ynh_permission_update --permission="main" --add="visitors"