diff --git a/scripts/backup b/scripts/backup
index 18f83fe..be44aee 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
diff --git a/scripts/change_url b/scripts/change_url
index a26579c..6dd5830 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC STARTING
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
diff --git a/scripts/install b/scripts/install
index ac0157e..424ae04 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -23,7 +21,7 @@ chown -R $app:www-data "$install_dir"
 #=================================================
 # PHP-FPM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring PHP-FPM..."
+ynh_script_progression --message="Adding system configurations related to $app..." --weight=1
 
 # Create a dedicated PHP-FPM config
 ynh_add_fpm_config
diff --git a/scripts/remove b/scripts/remove
index 2c04d62..52b7893 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -10,9 +8,9 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
-# REMOVE NGINX CONFIGURATION
+# REMOVE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Removing NGINX web server configuration..."
+ynh_script_progression --message="Removing system configurations related to $app..." --weight=1
 
 # Remove the dedicated NGINX config
 ynh_remove_nginx_config
diff --git a/scripts/restore b/scripts/restore
index 72e44fb..998f2e0 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -21,22 +19,20 @@ chmod -R o-rwx "$install_dir"
 chown -R $app:www-data "$install_dir"
 
 #=================================================
-# RESTORE THE PHP-FPM CONFIGURATION
+# RESTORE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Restoring the PHP-FPM configuration..."
+ynh_script_progression --message="Restoring system configurations related to $app..." --weight=1
 
 ynh_restore_file --origin_path="/etc/php/$phpversion/fpm/pool.d/$app.conf"
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# GENERIC FINALIZATION
 #=================================================
 # RELOAD NGINX AND PHP-FPM
 #=================================================
 ynh_script_progression --message="Reloading NGINX web server and PHP-FPM..."
 
-ynh_systemd_action --service_name=php$phpversion-fpm --action=reload
+ynh_systemd_action --service_name="php$phpversion-fpm" --action=reload
 ynh_systemd_action --service_name=nginx --action=reload
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index d87c4e7..465b62e 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -9,33 +7,21 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# CHECK VERSION
-#=================================================
-
-upgrade_type=$(ynh_check_app_version_changed)
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..."
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..."
-
-	ynh_secure_remove --file="$install_dir"
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir"
-fi
-
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$install_dir" --full_replace=1
 
 chmod -R o-rwx "$install_dir"
 chown -R $app:www-data "$install_dir"
 
 #=================================================
-# PHP-FPM CONFIGURATION
+# REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Upgrading PHP-FPM configuration..."
+ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1
 
 # Create a dedicated PHP-FPM config
 ynh_add_fpm_config