diff --git a/README_fr.md b/README_fr.md
index 836f3df..1cb13de 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -45,4 +45,4 @@ ou
 sudo yunohost app upgrade pydio -u https://github.com/YunoHost-Apps/pydio_ynh/tree/testing --debug
 ```
 
-**Plus d’infos sur le packaging d’applications :** <https://yunohost.org/packaging_apps>
\ No newline at end of file
+**Plus d’infos sur le packaging d’applications :** <https://yunohost.org/packaging_apps>
diff --git a/manifest.toml b/manifest.toml
index d29cd83..cd95fc1 100644
--- a/manifest.toml
+++ b/manifest.toml
@@ -9,7 +9,7 @@ description.fr = "Plateforme de partage de fichiers"
 
 version = "4.3.1~ynh1"
 
-maintainers = ["salamandar"]
+maintainers = ["julienmalik"]
 
 [upstream]
 license = "AGPL-3.0"
@@ -28,8 +28,8 @@ ldap = false
 sso = false
 
 disk = "50M"
-ram.build = "50M"
-ram.runtime = "50M"
+ram.build = "500M"
+ram.runtime = "500M"
 
 [install]
     [install.domain]
@@ -77,7 +77,10 @@ ram.runtime = "50M"
     grpc.default = 50052
 
     [resources.apt]
-    packages = "mariadb-server"
+    packages = [
+        "acl",
+        "mariadb-server",
+    ]
 
     [resources.database]
     type = "mysql"
diff --git a/scripts/backup b/scripts/backup
index 4606e12..49546aa 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -25,7 +25,6 @@ ynh_backup --src_path="$install_dir"
 # BACKUP THE DATA DIR
 #=================================================
 
-# Only relevant if there is a "data_dir" resource for this app
 ynh_backup --src_path="$data_dir" --is_big
 
 #=================================================
diff --git a/scripts/install b/scripts/install
index 6224e9b..65e225d 100755
--- a/scripts/install
+++ b/scripts/install
@@ -9,53 +9,52 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# APP "BUILD" (DEPLOYING SOURCES, VENV, COMPILING ETC)
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 ynh_script_progression --message="Setting up source files..." --weight=1
 
+# Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source --dest_dir="$install_dir"
 
-chown -R "$app:www-data" "$install_dir"
 chmod +x "$install_dir/cells"
 
+chmod 750 "$install_dir"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
+
+#=================================================
+# ADD A CONFIGURATION
+#=================================================
+ynh_script_progression --message="Configuring $app..." --weight=1
+
+ynh_add_config --template="../conf/install-conf.yml" --destination="$install_dir/install-conf.yml"
+ynh_delete_file_checksum --file="$install_dir/install-conf.yml"
+
+pushd "$install_dir"
+    ynh_exec_as "$app" ./cells configure --cli --yaml "./install-conf.yml"
+popd
+ynh_secure_remove --file="$install_dir/install-conf.yml"
+
 #=================================================
 # SYSTEM CONFIGURATION
 #=================================================
 ynh_script_progression --message="Adding system configurations related to $app..." --weight=1
 
+# Create a dedicated NGINX config
 ynh_add_nginx_config
 
+# Create a dedicated systemd config
 ynh_add_systemd_config
-
 yunohost service add "$app" --description="File sharing platform" --log="/var/log/$app/$app.log"
 
-#=================================================
-# APP INITIAL CONFIGURATION
-#=================================================
-# ADD A CONFIGURATION
-#=================================================
-ynh_script_progression --message="Configuring $app..." --weight=1
-
-ynh_add_config --template="install-conf.yml" --destination="$install_dir/install-conf.yml"
-
-pushd "$install_dir"
-	ynh_exec_as $app ./cells configure --cli --yaml "$install_dir/install-conf.yml"
-popd
-
-ynh_secure_remove --file="$install_dir/install-conf.yml"
-ynh_delete_file_checksum --file="$install_dir/install-conf.yml"
-
-#=================================================
-# GENERIC FINALIZATION
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
 ynh_script_progression --message="Starting a systemd service..." --weight=1
 
-ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd"
+# Start a systemd service
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Restart done"
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/remove b/scripts/remove
index 46cdd26..e2a26db 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -12,19 +12,26 @@ source /usr/share/yunohost/helpers
 #=================================================
 # REMOVE SYSTEM CONFIGURATIONS
 #=================================================
-# REMOVE SYSTEMD SERVICE
-#=================================================
 ynh_script_progression --message="Removing system configurations related to $app..." --weight=1
 
+# Remove the service from the list of services known by YunoHost (added from `yunohost service add`)
 if ynh_exec_warn_less yunohost service status "$app" >/dev/null; then
-	ynh_script_progression --message="Removing $app service integration..." --weight=1
-	yunohost service remove "$app"
+    yunohost service remove "$app"
 fi
 
+# Remove the dedicated systemd config
 ynh_remove_systemd_config
 
+# Remove the dedicated NGINX config
 ynh_remove_nginx_config
 
+#=================================================
+# SPECIFIC REMOVE
+#=================================================
+# REMOVE VARIOUS FILES
+#=================================================
+# ynh_script_progression --message="Removing various files..."
+
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 4a92bc2..099e2f6 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -17,8 +17,7 @@ ynh_script_progression --message="Restoring the app main directory..." --weight=
 
 ynh_restore_file --origin_path="$install_dir"
 
-chown -R "$app:www-data" "$install_dir"
-chmod +x "$install_dir/cells"
+chown -R $app:www-data "$install_dir"
 
 #=================================================
 # RESTORE THE DATA DIRECTORY
@@ -45,7 +44,6 @@ ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable "$app.service" --quiet
-
 yunohost service add "$app" --description="File sharing platform" --log="/var/log/$app/$app.log"
 
 #=================================================
@@ -55,7 +53,7 @@ yunohost service add "$app" --description="File sharing platform" --log="/var/lo
 #=================================================
 ynh_script_progression --message="Reloading NGINX web server and $app's service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Restart done"
 ynh_systemd_action --service_name=nginx --action=reload
 
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index b8b166f..ba82bc6 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,8 +9,8 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-upgrade_type=$(ynh_check_app_version_changed)
-
+#=================================================
+# STANDARD UPGRADE STEPS
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
@@ -19,21 +19,24 @@ ynh_script_progression --message="Stopping a systemd service..." --weight=1
 ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd"
 
 #=================================================
-# "REBUILD" THE APP (DEPLOY NEW SOURCES, RERUN NPM BUILD...)
+# ENSURE DOWNWARD COMPATIBILITY
+#=================================================
+ynh_script_progression --message="Ensuring downward compatibility..."
+
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..."
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]; then
-	ynh_script_progression --message="Upgrading source files..." --weight=1
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$install_dir" --full_replace=1 --keep=".config .minio"
 
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$install_dir"
-fi
-
-chown -R "$app:www-data" "$install_dir"
 chmod +x "$install_dir/cells"
 
+chmod 750 "$install_dir"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
+
 #=================================================
 # REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
@@ -41,8 +44,8 @@ ynh_script_progression --message="Upgrading system configurations related to $ap
 
 ynh_add_nginx_config
 
+# Create a dedicated systemd config
 ynh_add_systemd_config
-
 yunohost service add "$app" --description="File sharing platform" --log="/var/log/$app/$app.log"
 
 #=================================================
@@ -50,7 +53,7 @@ yunohost service add "$app" --description="File sharing platform" --log="/var/lo
 #=================================================
 ynh_script_progression --message="Starting a systemd service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="start" --log_path="systemd"
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd" --line_match="Restart done"
 
 #=================================================
 # END OF SCRIPT
diff --git a/tests.toml b/tests.toml
index 3081978..b2d03a7 100644
--- a/tests.toml
+++ b/tests.toml
@@ -4,5 +4,6 @@ test_format = 1.0
 
 [default]
 
-    # test_upgrade_from.00a1a6e7.name = "Upgrade from 5.4"
-    # test_upgrade_from.00a1a6e7.args.foo = "bar"
+    exclude = ["change_url"]
+
+    test_upgrade_from.5725c85c09f1d3b76d12a4dc4d367ec911cd0019.name = "Last packaging v2 version"