diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..783a4ae
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*~
+*.sw[op]
diff --git a/README.md b/README.md
index 1b3ccbc..1a85473 100644
--- a/README.md
+++ b/README.md
@@ -16,9 +16,10 @@ If you don't have YunoHost, please consult [the guide](https://yunohost.org/#/in
 
 ## Overview
 
-File sharing platform
+Cells V4 now provides secure, cloud-native, scalable, self-hosted, open-core document sharing and collaboration without putting your data at risk.
 
-**Shipped version:** 3.0.9~ynh1
+
+**Shipped version:** 4.3.1~ynh1
 
 ## Screenshots
 
@@ -27,7 +28,7 @@ File sharing platform
 ## Documentation and resources
 
 * Official app website: <https://pydio.com>
-* Official admin documentation: <https://pydio.com/en/docs/>
+* Official admin documentation: <https://pydio.com/en/docs>
 * Upstream app code repository: <https://github.com/pydio/cells>
 * YunoHost Store: <https://apps.yunohost.org/app/pydio>
 * Report a bug: <https://github.com/YunoHost-Apps/pydio_ynh/issues>
diff --git a/README_fr.md b/README_fr.md
index 03207eb..836f3df 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -16,9 +16,10 @@ Si vous n’avez pas YunoHost, regardez [ici](https://yunohost.org/#/install) po
 
 ## Vue d’ensemble
 
-Plateforme de partage de fichiers
+Cells V4 offre désormais un partage et une collaboration de documents sécurisés, cloud natifs, évolutifs, auto-hébergés et open-core sans mettre vos données en danger.
 
-**Version incluse :** 3.0.9~ynh1
+
+**Version incluse :** 4.3.1~ynh1
 
 ## Captures d’écran
 
@@ -27,7 +28,7 @@ Plateforme de partage de fichiers
 ## Documentations et ressources
 
 * Site officiel de l’app : <https://pydio.com>
-* Documentation officielle de l’admin : <https://pydio.com/en/docs/>
+* Documentation officielle de l’admin : <https://pydio.com/en/docs>
 * Dépôt de code officiel de l’app : <https://github.com/pydio/cells>
 * YunoHost Store: <https://apps.yunohost.org/app/pydio>
 * Signaler un bug : <https://github.com/YunoHost-Apps/pydio_ynh/issues>
diff --git a/check_process b/check_process
deleted file mode 100644
index 0b52ab7..0000000
--- a/check_process
+++ /dev/null
@@ -1,21 +0,0 @@
-;; Test complet
-	; Manifest
-		domain="domain.tld"
-		admin="john"
-		password="1Strong-Password"
-	; Checks
-		pkg_linter=1
-		setup_sub_dir=0
-		setup_root=1
-		setup_nourl=0
-		setup_private=0
-		setup_public=1
-		upgrade=1
-		#upgrade=1	from_commit=CommitHash
-		backup_restore=1
-		multi_instance=1
-		port_already_use=0
-		change_url=0
-;;; Options
-Email=
-Notification=none
diff --git a/conf/app.src b/conf/app.src
deleted file mode 100644
index d6af588..0000000
--- a/conf/app.src
+++ /dev/null
@@ -1,6 +0,0 @@
-SOURCE_URL=https://download.pydio.com/pub/cells/release/3.0.9/linux-amd64/cells
-SOURCE_SUM=4272ca1e10f2ca08d08d7d08d440d4b6e3d09ba37235f54bdbac1ac7c29b2aaa
-SOURCE_SUM_PRG=sha256sum
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=cells
-SOURCE_EXTRACT=false
diff --git a/conf/install-conf.yml b/conf/install-conf.yml
index c353510..fc3d830 100644
--- a/conf/install-conf.yml
+++ b/conf/install-conf.yml
@@ -1,7 +1,7 @@
 # Basic no-TLS config for the embedded gateway
 proxyconfig:
   binds:
-    - localhost:__PORT__
+    - 127.0.0.1:__PORT__
   reverseproxyurl: https://__DOMAIN__
   tlsconfig:
       selfsigned:
@@ -19,4 +19,4 @@ dbtcpname: __DB_NAME__
 dbtcpuser: __DB_USER__
 dbtcppassword: __DB_PWD__
 
-dsfolder: __DATADIR__
\ No newline at end of file
+dsfolder: __DATA_DIR__
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 33263fe..1589b56 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,13 +1,12 @@
 location / {
-
-  proxy_pass https://localhost:__PORT__;
+  proxy_pass https://127.0.0.1:__PORT__;
 
   # Include SSOWAT user panel.
   include conf.d/yunohost_panel.conf.inc;
 }
 
 location /ws/ {
-    proxy_pass https://localhost:__PORT__;
+    proxy_pass https://127.0.0.1:__PORT__;
     proxy_http_version 1.1;
     proxy_set_header Upgrade $http_upgrade;
     proxy_set_header Connection "Upgrade";
diff --git a/conf/systemd.service b/conf/systemd.service
index 461e17f..47d883d 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -3,16 +3,16 @@ Description=Pydio Cells
 Documentation=https://pydio.com
 Wants=network-online.target
 After=network-online.target
-AssertFileIsExecutable=__FINALPATH__/cells
+AssertFileIsExecutable=__INSTALL_DIR__/cells
 
 [Service]
 User=__APP__
 Group=__APP__
-WorkingDirectory=__DATADIR__/
+WorkingDirectory=__INSTALL_DIR__/
 PermissionsStartOnly=true
 
 AmbientCapabilities=CAP_NET_BIND_SERVICE
-ExecStart=__FINALPATH__/cells start
+ExecStart=__INSTALL_DIR__/cells start --grpc_discovery_port __PORT_DISCOVERY_GRPC__ --grpc_port __PORT_GRPC__
 Restart=on-failure
 StandardOutput=journal
 StandardError=inherit
@@ -24,8 +24,8 @@ SuccessExitStatus=0
 
 # Add environment variables
 Environment=CELLS_ENABLE_METRICS=false
-# Environment=CELLS_WORKING_DIR=__FINALPATH__
-# Environment=CELLS_DATA_DIR=__DATADIR__
+# Environment=CELLS_WORKING_DIR=__INSTALL_DIR__
+Environment=CELLS_DATA_DIR=__DATA_DIR__
 
 [Install]
 WantedBy=multi-user.target
diff --git a/doc/DESCRIPTION.md b/doc/DESCRIPTION.md
index e69de29..0a8bbb2 100644
--- a/doc/DESCRIPTION.md
+++ b/doc/DESCRIPTION.md
@@ -0,0 +1 @@
+Cells V4 now provides secure, cloud-native, scalable, self-hosted, open-core document sharing and collaboration without putting your data at risk.
diff --git a/doc/DESCRIPTION_fr.md b/doc/DESCRIPTION_fr.md
new file mode 100644
index 0000000..f94852d
--- /dev/null
+++ b/doc/DESCRIPTION_fr.md
@@ -0,0 +1 @@
+Cells V4 offre désormais un partage et une collaboration de documents sécurisés, cloud natifs, évolutifs, auto-hébergés et open-core sans mettre vos données en danger.
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
deleted file mode 100644
index e69de29..0000000
diff --git a/manifest.json b/manifest.json
deleted file mode 100644
index 2e56cc3..0000000
--- a/manifest.json
+++ /dev/null
@@ -1,47 +0,0 @@
-{
-    "name": "Pydio",
-    "id": "pydio",
-    "packaging_format": 1,
-    "description": {
-        "en": "File sharing platform",
-        "fr": "Plateforme de partage de fichiers"
-    },
-    "version": "3.0.9~ynh1",
-    "url": "https://pydio.com",
-    "upstream": {
-        "license": "AGPL-3.0-or-later",
-        "website": "https://pydio.com",
-        "admindoc": "https://pydio.com/en/docs/",
-        "code": "https://github.com/pydio/cells"
-    },
-    "license": "AGPL-3.0-or-later",
-    "maintainer": {
-        "name": "julienmalik",
-        "email": "julien.malik@paraiso.me",
-        "url": "https://github.com/julienmalik"
-    },
-    "requirements": {
-        "yunohost": ">= 11.1.21"
-    },
-    "multi_instance": true,
-    "services": [
-        "nginx",
-        "mysql"
-    ],
-    "arguments": {
-        "install": [
-            {
-                "name": "domain",
-                "type": "domain"
-            },
-            {
-                "name": "admin",
-                "type": "user"
-            },
-            {
-                "name": "password",
-                "type": "password"
-            }
-        ]
-    }
-}
diff --git a/manifest.toml b/manifest.toml
new file mode 100644
index 0000000..23438e4
--- /dev/null
+++ b/manifest.toml
@@ -0,0 +1,86 @@
+#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/manifest.v2.schema.json
+
+packaging_format = 2
+
+id = "pydio"
+name = "Pydio"
+description.en = "File sharing platform"
+description.fr = "Plateforme de partage de fichiers"
+
+version = "4.3.1~ynh1"
+
+maintainers = ["julienmalik"]
+
+[upstream]
+license = "AGPL-3.0"
+website = "https://pydio.com"
+admindoc = "https://pydio.com/en/docs"
+code = "https://github.com/pydio/cells"
+cpe = "cpe:2.3:a:pydio:cells"
+fund = "https://pydio.com/en/pricing"
+
+[integration]
+yunohost = ">= 11.2"
+architectures = ["amd64", "armhf", "arm64"]
+multi_instance = true
+
+ldap = false
+sso = false
+
+disk = "50M"
+ram.build = "700M"
+ram.runtime = "700M"
+
+[install]
+    [install.domain]
+    type = "domain"
+
+    [install.init_main_permission]
+    type = "group"
+    default = "visitors"
+
+    [install.admin]
+    type = "user"
+
+    [install.password]
+    type = "password"
+
+[resources]
+
+    [resources.sources]
+    [resources.sources.main]
+    amd64.url = "https://download.pydio.com/pub/cells/release/4.3.1/linux-amd64/pydio-cells-4.3.1-linux-amd64.zip"
+    amd64.sha256 = "966337451cf007ff9294f15db830cda128162604bb44ccd91510fae292c790ee"
+    arm64.url = "https://download.pydio.com/pub/cells/release/4.3.1/linux-arm64/pydio-cells-4.3.1-linux-arm64.zip"
+    arm64.sha256 = "840d9a85e15892b52dd549152bef240015584b82feace9137e8b5b1660e80c43"
+    armhf.url = "https://download.pydio.com/pub/cells/release/4.3.1/linux-arm/pydio-cells-4.3.1-linux-arm.zip"
+    armhf.sha256 = "af200d58f3efd917bf8add2a0e8bfb3bc832780cca470070530afa6bb1caefd0"
+    in_subdir = false
+
+    [resources.system_user]
+
+    [resources.install_dir]
+
+    [resources.data_dir]
+    group = "www-data:rwx"
+
+    [resources.permissions]
+    main.url = "/"
+    api.url = "/api"
+    api.allowed = "visitors"
+    api.show_tile = false
+    api.protected = true
+
+    [resources.ports]
+    main.default = 8080
+    discovery_grpc.default = 50051
+    grpc.default = 50053
+
+    [resources.apt]
+    packages = [
+        "acl",
+        "mariadb-server",
+    ]
+
+    [resources.database]
+    type = "mysql"
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 82e3b11..944a65e 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -4,9 +4,6 @@
 # COMMON VARIABLES
 #=================================================
 
-# dependencies used by the app
-#pkg_dependencies="acl"
-
 #=================================================
 # PERSONAL HELPERS
 #=================================================
diff --git a/scripts/backup b/scripts/backup
old mode 100644
new mode 100755
index 44e4951..ea3891d
--- a/scripts/backup
+++ b/scripts/backup
@@ -10,28 +10,6 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	true
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_print_info --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
@@ -41,26 +19,20 @@ ynh_print_info --message="Declaring files to be backed up..."
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup --src_path="$final_path"
+ynh_backup --src_path="$install_dir"
 
 #=================================================
 # BACKUP THE DATA DIR
 #=================================================
 
-ynh_backup --src_path="$datadir" --is_big
+ynh_backup --src_path="$data_dir" --is_big
 
 #=================================================
-# BACKUP THE NGINX CONFIGURATION
+# SYSTEM CONFIGURATION
 #=================================================
 
 ynh_backup --src_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# SPECIFIC BACKUP
-#=================================================
-# BACKUP SYSTEMD
-#=================================================
-
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
 #=================================================
diff --git a/scripts/change_url b/scripts/change_url
new file mode 100644
index 0000000..546471e
--- /dev/null
+++ b/scripts/change_url
@@ -0,0 +1,41 @@
+#!/bin/bash
+
+#=================================================
+# GENERIC STARTING
+#=================================================
+# IMPORT GENERIC HELPERS
+#=================================================
+
+source _common.sh
+source /usr/share/yunohost/helpers
+
+#=================================================
+# STANDARD MODIFICATIONS
+#=================================================
+# STOP SYSTEMD SERVICE
+#=================================================
+ynh_script_progression --message="Stopping a systemd service..." --weight=1
+
+ynh_systemd_action --service_name="$app" --action="stop" --log_path="systemd"
+
+#=================================================
+# MODIFY URL IN NGINX CONF
+#=================================================
+ynh_script_progression --message="Updating NGINX web server configuration..." --weight=1
+
+ynh_change_url_nginx_config
+
+#=================================================
+# GENERIC FINALISATION
+#=================================================
+# START SYSTEMD SERVICE
+#=================================================
+ynh_script_progression --message="Starting a systemd service..." --weight=1
+
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd"
+
+#=================================================
+# END OF SCRIPT
+#=================================================
+
+ynh_script_progression --message="Change of URL completed for $app" --last
diff --git a/scripts/install b/scripts/install
old mode 100644
new mode 100755
index 986f1ee..c78cfe9
--- a/scripts/install
+++ b/scripts/install
@@ -9,179 +9,57 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	ynh_clean_check_starting
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# RETRIEVE ARGUMENTS FROM THE MANIFEST
-#=================================================
-
-domain=$YNH_APP_ARG_DOMAIN
-path_url="/"
-admin=$YNH_APP_ARG_ADMIN
-password=$YNH_APP_ARG_PASSWORD
-
-app=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
-#=================================================
-ynh_script_progression --message="Validating installation parameters..."
-
-final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die --message="This path already contains a folder"
-
-# Register (book) web path
-ynh_webpath_register --app=$app --domain=$domain --path_url=$path_url
-
-#=================================================
-# STORE SETTINGS FROM MANIFEST
-#=================================================
-ynh_script_progression --message="Storing installation settings..."
-
-ynh_app_setting_set --app=$app --key=domain --value=$domain
-ynh_app_setting_set --app=$app --key=path --value=$path_url
-ynh_app_setting_set --app=$app --key=admin --value=$admin
-
-#=================================================
-# STANDARD MODIFICATIONS
-#=================================================
-# FIND AND OPEN A PORT
-#=================================================
-ynh_script_progression --message="Finding an available port..."
-
-# Find an available port
-port=$(ynh_find_port --port=8080)
-ynh_app_setting_set --app=$app --key=port --value=$port
-
-# Optional: Expose this port publicly
-# (N.B.: you only need to do this if the app actually needs to expose the port publicly.
-# If you do this and the app doesn't actually need you are CREATING SECURITY HOLES IN THE SERVER !)
-
-# Open the port
-# ynh_script_progression --message="Configuring firewall..."
-# ynh_exec_warn_less yunohost firewall allow --no-upnp TCP $port
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Configuring system user..."
-
-# Create a system user
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
-#=================================================
-# CREATE A MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Creating a MySQL database..."
-
-db_name=$(ynh_sanitize_dbid --db_name=$app)
-db_user=$db_name
-ynh_app_setting_set --app=$app --key=db_name --value=$db_name
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
-ynh_script_progression --message="Setting up source files..."
+ynh_script_progression --message="Setting up source files..." --weight=1
 
-ynh_app_setting_set --app=$app --key=final_path --value=$final_path
 # Download, check integrity, uncompress and patch the source from app.src
-ynh_setup_source --dest_dir="$final_path"
+ynh_setup_source --dest_dir="$install_dir"
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chmod +x "$final_path/cells"
+chmod +x "$install_dir/cells"
 
-#=================================================
-# NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Configuring NGINX web server..."
-
-# Create a dedicated NGINX config
-ynh_add_nginx_config
-
-#=================================================
-# SPECIFIC SETUP
-#=================================================
-# CREATE DATA DIRECTORY
-#=================================================
-ynh_script_progression --message="Creating a data directory..."
-
-datadir=/home/yunohost.app/$app
-ynh_app_setting_set --app=$app --key=datadir --value=$datadir
-
-mkdir -p $datadir
-
-chmod 750 "$datadir"
-chmod -R o-rwx "$datadir"
-chown -R $app:www-data "$datadir"
+chmod 750 "$install_dir"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
 
 #=================================================
 # ADD A CONFIGURATION
 #=================================================
-ynh_script_progression --message="Adding a configuration file..."
+ynh_script_progression --message="Adding a configuration file..." --weight=1
 
-ynh_add_config --template="../conf/install-conf.yml" --destination="$final_path/install-conf.yml"
-ynh_delete_file_checksum --file="$final_path/install-conf.yml"
+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 "$final_path"
-	ynh_exec_as $app ./cells configure --cli --yaml "$final_path/install-conf.yml"
+pushd "$install_dir"
+    # See https://pydio.com/fr/docs/cells/v4/working-directories
+    ynh_exec_as "$app" env \
+        CELLS_DATA_DIR="$data_dir" \
+        ./cells configure --cli --yaml "./install-conf.yml"
 popd
-
-ynh_secure_remove --file="$final_path/install-conf.yml"
+ynh_secure_remove --file="$install_dir/install-conf.yml"
 
 #=================================================
-# SETUP SYSTEMD
+# SYSTEM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring a systemd service..."
+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
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# INTEGRATE SERVICE IN YUNOHOST
-#=================================================
-ynh_script_progression --message="Integrating service in YunoHost..."
-
-yunohost service add $app
+yunohost service add "$app" --description="File sharing platform"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..."
+ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 # Start a systemd service
-ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Restart done"
-
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Configuring permissions..."
-
-# Everyone can access the app.
-# The "main" permission is automatically created before the install script.
-ynh_permission_update --permission="main" --add="visitors"
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
-
-ynh_systemd_action --service_name=nginx --action=reload
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
-
-ynh_script_progression --message="Installation of $app completed"
+ynh_script_progression --message="Installation of $app completed" --last
diff --git a/scripts/remove b/scripts/remove
old mode 100644
new mode 100755
index 909874e..e2a26db
--- a/scripts/remove
+++ b/scripts/remove
@@ -10,102 +10,30 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-port=$(ynh_app_setting_get --app=$app --key=port)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-
-#=================================================
-# STANDARD REMOVE
-#=================================================
-# REMOVE SERVICE INTEGRATION IN YUNOHOST
+# REMOVE SYSTEM CONFIGURATIONS
 #=================================================
+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..."
-	yunohost service remove $app
+if ynh_exec_warn_less yunohost service status "$app" >/dev/null; then
+    yunohost service remove "$app"
 fi
 
-#=================================================
-# STOP AND REMOVE SERVICE
-#=================================================
-ynh_script_progression --message="Stopping and removing the systemd service..."
-
 # Remove the dedicated systemd config
 ynh_remove_systemd_config
 
-#=================================================
-# REMOVE THE MYSQL DATABASE
-#=================================================
-ynh_script_progression --message="Removing the MySQL database..."
-
-# Remove a database if it exists, along with the associated user
-ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
-
-#=================================================
-# REMOVE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Removing app main directory..."
-
-# Remove the app directory securely
-ynh_secure_remove --file="$final_path"
-
-#=================================================
-# REMOVE DATA DIR
-#=================================================
-
-# Remove the data directory if --purge option is used
-if [ "${YNH_APP_PURGE:-0}" -eq 1 ]
-then
-	ynh_script_progression --message="Removing app data directory..."
-	ynh_secure_remove --file="$datadir"
-fi
-
-#=================================================
-# REMOVE NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Removing NGINX web server configuration..."
-
 # Remove the dedicated NGINX config
 ynh_remove_nginx_config
 
-#=================================================
-# REMOVE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Removing dependencies..."
-
-# Remove metapackage and its dependencies
-ynh_remove_app_dependencies
-
 #=================================================
 # SPECIFIC REMOVE
 #=================================================
 # REMOVE VARIOUS FILES
 #=================================================
-ynh_script_progression --message="Removing various files..."
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# REMOVE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Removing the dedicated system user..."
-
-# Delete a system user
-ynh_system_user_delete --username=$app
+# ynh_script_progression --message="Removing various files..."
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Removal of $app completed"
+ynh_script_progression --message="Removal of $app completed" --last
diff --git a/scripts/restore b/scripts/restore
old mode 100644
new mode 100755
index 39b0fde..ec770e5
--- a/scripts/restore
+++ b/scripts/restore
@@ -10,123 +10,54 @@
 source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-ynh_clean_setup () {
-	ynh_clean_check_starting
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(ynh_app_setting_get --app=$app --key=path)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-db_name=$(ynh_app_setting_get --app=$app --key=db_name)
-db_user=$db_name
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-
-#=================================================
-# CHECK IF THE APP CAN BE RESTORED
-#=================================================
-ynh_script_progression --message="Validating restoration parameters..."
-
-test ! -d $final_path \
-	|| ynh_die --message="There is already a directory: $final_path "
-
-#=================================================
-# STANDARD RESTORATION STEPS
-#=================================================
-# RESTORE THE NGINX CONFIGURATION
-#=================================================
-ynh_script_progression --message="Restoring the NGINX web server configuration..."
-
-ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
-
-#=================================================
-# RECREATE THE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..."
-
-# Create the dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
-ynh_script_progression --message="Restoring the app main directory..."
+ynh_script_progression --message="Restoring the app main directory..." --weight=1
 
-ynh_restore_file --origin_path="$final_path"
+ynh_restore_file --origin_path="$install_dir"
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
+chown -R $app:www-data "$install_dir"
 
 #=================================================
 # RESTORE THE DATA DIRECTORY
 #=================================================
-ynh_script_progression --message="Restoring the data directory..."
+ynh_script_progression --message="Restoring the data directory..." --weight=1
 
-ynh_restore_file --origin_path="$datadir" --not_mandatory
+ynh_restore_file --origin_path="$data_dir" --not_mandatory
 
-mkdir -p $datadir
+chown -R "$app:www-data" "$data_dir"
 
-chmod 750 "$datadir"
-chmod -R o-rwx "$datadir"
-chown -R $app:www-data "$datadir"
-
-#=================================================
-# SPECIFIC RESTORATION
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
-ynh_script_progression --message="Restoring the MySQL database..."
+ynh_script_progression --message="Restoring the MySQL database..." --weight=1
 
-db_pwd=$(ynh_app_setting_get --app=$app --key=mysqlpwd)
-ynh_mysql_setup_db --db_user=$db_user --db_name=$db_name --db_pwd=$db_pwd
-ynh_mysql_connect_as --user=$db_user --password=$db_pwd --database=$db_name < ./db.sql
+ynh_mysql_connect_as --user="$db_user" --password="$db_pwd" --database="$db_name" < ./db.sql
 
 #=================================================
-# RESTORE SYSTEMD
+# RESTORE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Restoring the systemd configuration..."
+ynh_script_progression --message="Restoring system configurations related to $app..." --weight=1
+
+ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
-systemctl enable $app.service --quiet
-
-#=================================================
-# INTEGRATE SERVICE IN YUNOHOST
-#=================================================
-ynh_script_progression --message="Integrating service in YunoHost..."
-
-yunohost service add $app
-
-#=================================================
-# START SYSTEMD SERVICE
-#=================================================
-ynh_script_progression --message="Starting a systemd service..."
-
-ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Restart done"
+systemctl enable "$app.service" --quiet
+yunohost service add "$app" --description="File sharing platform"
 
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
-# RELOAD NGINX
+# RELOAD NGINX AND PHP-FPM OR THE APP SERVICE
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
+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=nginx --action=reload
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Restoration completed for $app"
+ynh_script_progression --message="Restoration completed for $app" --last
diff --git a/scripts/upgrade b/scripts/upgrade
old mode 100644
new mode 100755
index bed3926..9265a63
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -9,131 +9,62 @@
 source _common.sh
 source /usr/share/yunohost/helpers
 
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-path_url=$(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=$app --key=db_name)
-port=$(ynh_app_setting_get --app=$app --key=port)
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
-
-#=================================================
-# CHECK VERSION
-#=================================================
-
-upgrade_type=$(ynh_check_app_version_changed)
-
-#=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
-#=================================================
-ynh_script_progression --message="Backing up the app before upgrading (may take a while)..."
-
-# Backup the current version of the app
-ynh_backup_before_upgrade
-ynh_clean_setup () {
-	ynh_clean_check_starting
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
 #=================================================
 # STANDARD UPGRADE STEPS
 #=================================================
 # STOP SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Stopping a systemd service..."
+ynh_script_progression --message="Stopping a systemd service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"
+ynh_systemd_action --service_name="$app" --action="stop"
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..."
+ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
-# Cleaning legacy permissions
-if ynh_legacy_permissions_exists; then
-	ynh_legacy_permissions_delete_all
-
-	ynh_app_setting_delete --app=$app --key=is_public
+# Previous installs might have been listening on local ipv6
+if ynh_compare_current_package_version --comparison lt --version "4.3.1~ynh1"; then
+    jq ".defaults.sites[0].Binds[0] = \"127.0.0.1:$port\"" "$install_dir/.config/pydio/cells/pydio.json" \
+        > "$install_dir/_pydio.json"
+    mv "$install_dir/_pydio.json" "$install_dir/.config/pydio/cells/pydio.json"
 fi
 
-#=================================================
-# 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=$app --home_dir="$final_path"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..." --weight=1
 
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	ynh_script_progression --message="Upgrading source files..."
+# Download, check integrity, uncompress and patch the source from app.src
+ynh_setup_source --dest_dir="$install_dir" --full_replace=1 --keep=".config .minio"
 
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
-fi
+chmod +x "$install_dir/cells"
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chmod +x "$final_path/cells"
+chmod 750 "$install_dir"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
 
 #=================================================
-# NGINX CONFIGURATION
+# REAPPLY SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Upgrading NGINX web server configuration..."
+ynh_script_progression --message="Upgrading system configurations related to $app..." --weight=1
 
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-#=================================================
-# SPECIFIC UPGRADE
-#=================================================
-# SETUP SYSTEMD
-#=================================================
-ynh_script_progression --message="Upgrading systemd configuration..."
-
 # Create a dedicated systemd config
 ynh_add_systemd_config
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# INTEGRATE SERVICE IN YUNOHOST
-#=================================================
-ynh_script_progression --message="Integrating service in YunoHost..."
-
-yunohost service add $app
+yunohost service add "$app" --description="File sharing platform"
 
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
-ynh_script_progression --message="Starting a systemd service..."
+ynh_script_progression --message="Starting a systemd service..." --weight=1
 
-ynh_systemd_action --service_name=$app --action="start" --log_path="systemd" --line_match="Restart done"
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
-
-ynh_systemd_action --service_name=nginx --action=reload
+ynh_systemd_action --service_name="$app" --action="start" --log_path="systemd"
 
 #=================================================
 # END OF SCRIPT
 #=================================================
 
-ynh_script_progression --message="Upgrade of $app completed"
+ynh_script_progression --message="Upgrade of $app completed" --last
diff --git a/tests.toml b/tests.toml
new file mode 100644
index 0000000..302b5d0
--- /dev/null
+++ b/tests.toml
@@ -0,0 +1,9 @@
+#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/tests.v1.schema.json
+
+test_format = 1.0
+
+[default]
+
+    exclude = ["change_url"]
+
+    test_upgrade_from.5725c85c09f1d3b76d12a4dc4d367ec911cd0019.name = "Last packaging v1 version"