diff --git a/.github/workflows/updater.sh b/.github/workflows/updater.sh
deleted file mode 100644
index aa544b7..0000000
--- a/.github/workflows/updater.sh
+++ /dev/null
@@ -1,132 +0,0 @@
-#!/bin/bash
-
-#=================================================
-# PACKAGE UPDATING HELPER
-#=================================================
-
-# This script is meant to be run by GitHub Actions
-# The YunoHost-Apps organisation offers a template Action to run this script periodically
-# Since each app is different, maintainers can adapt its contents so as to perform
-# automatic actions when a new upstream release is detected.
-
-#=================================================
-# FETCHING LATEST RELEASE AND ITS ASSETS
-#=================================================
-
-# Fetching information
-current_version=$(cat manifest.json | jq -j '.version|split("~")[0]')
-repo=$(cat manifest.json | jq -j '.upstream.code|split("https://github.com/")[1]')
-# Some jq magic is needed, because the latest upstream release is not always the latest version (e.g. security patches for older versions)
-version=$(curl --silent "https://api.github.com/repos/$repo/releases" | jq -r '.[] | select( .prerelease != true ) | .tag_name' | sort -V | tail -1)
-assets=($(curl --silent "https://api.github.com/repos/$repo/releases" | jq -r '[ .[] | select(.tag_name=="'$version'").assets[].browser_download_url ] | join(" ") | @sh' | tr -d "'"))
-
-# Later down the script, we assume the version has only digits and dots
-# Sometimes the release name starts with a "v", so let's filter it out.
-# You may need more tweaks here if the upstream repository has different naming conventions. 
-if [[ ${version:0:1} == "v" || ${version:0:1} == "V" ]]; then
-	version=${version:1}
-fi
-
-# Setting up the environment variables
-echo "Current version: $current_version"
-echo "Latest release from upstream: $version"
-echo "VERSION=$version" >> $GITHUB_ENV
-echo "REPO=$repo" >> $GITHUB_ENV
-# For the time being, let's assume the script will fail
-echo "PROCEED=false" >> $GITHUB_ENV
-
-# Proceed only if the retrieved version is greater than the current one
-if ! dpkg --compare-versions "$current_version" "lt" "$version" ; then
-	echo "::warning ::No new version available"
-	exit 0
-# Proceed only if a PR for this new version does not already exist
-elif git ls-remote -q --exit-code --heads https://github.com/$GITHUB_REPOSITORY.git ci-auto-update-v$version ; then
-	echo "::warning ::A branch already exists for this update"
-	exit 0
-fi
-
-# Each release can hold multiple assets (e.g. binaries for different architectures, source code, etc.)
-echo "${#assets[@]} available asset(s)"
-
-#=================================================
-# UPDATE SOURCE FILES
-#=================================================
-
-# Here we use the $assets variable to get the resources published in the upstream release.
-# Here is an example for Grav, it has to be adapted in accordance with how the upstream releases look like.
-
-# Let's loop over the array of assets URLs
-for asset_url in ${assets[@]}; do
-
-	echo "Handling asset at $asset_url"
-
-	# Assign the asset to a source file in conf/ directory
-	# Here we base the source file name upon a unique keyword in the assets url (admin vs. update)
-	# Leave $src empty to ignore the asset
-	case $asset_url in
-		*"web"*)
-			src="app"
-			;;
-		*)
-			src=""
-		;;
-	esac
-
-	# If $src is not empty, let's process the asset
-	if [ ! -z "$src" ]; then
-
-		# Create the temporary directory
-		tempdir="$(mktemp -d)"
-
-		# Download sources and calculate checksum
-		filename=${asset_url##*/}
-		curl --silent -4 -L $asset_url -o "$tempdir/$filename"
-		checksum=$(sha256sum "$tempdir/$filename" | head -c 64)
-
-		# Delete temporary directory
-		rm -rf $tempdir
-
-		# Get extension
-		if [[ $filename == *.tar.gz ]]; then
-			extension=tar.gz
-		else
-			extension=${filename##*.}
-		fi
-
-		# Rewrite source file
-		cat <<EOT > conf/$src.src
-SOURCE_URL=$asset_url
-SOURCE_SUM=$checksum
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=$extension
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=
-SOURCE_EXTRACT=true
-EOT
-		echo "... conf/$src.src updated"
-
-	else
-		echo "... asset ignored"
-	fi
-
-done
-
-#=================================================
-# SPECIFIC UPDATE STEPS
-#=================================================
-
-# Any action on the app's source code can be done.
-# The GitHub Action workflow takes care of committing all changes after this script ends.
-
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-
-# Replace new version in manifest
-echo "$(jq -s --indent 4 ".[] | .version = \"$version~ynh1\"" manifest.json)" > manifest.json
-
-# No need to update the README, yunohost-bot takes care of it
-
-# The Action will proceed only if the PROCEED environment variable is set to true
-echo "PROCEED=true" >> $GITHUB_ENV
-exit 0
diff --git a/.github/workflows/updater.yml b/.github/workflows/updater.yml
deleted file mode 100644
index a56d7cb..0000000
--- a/.github/workflows/updater.yml
+++ /dev/null
@@ -1,49 +0,0 @@
-# This workflow allows GitHub Actions to automagically update your app whenever a new upstream release is detected.
-# You need to enable Actions in your repository settings, and fetch this Action from the YunoHost-Apps organization.
-# This file should be enough by itself, but feel free to tune it to your needs.
-# It calls updater.sh, which is where you should put the app-specific update steps.
-name: Check for new upstream releases
-on:
-  # Allow to manually trigger the workflow
-  workflow_dispatch:
-  # Run it every day at 6:00 UTC
-  schedule:
-    - cron:  '0 6 * * *'
-jobs:
-  updater:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Fetch the source code
-        uses: actions/checkout@v3
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-      - name: Run the updater script
-        id: run_updater
-        run: |
-          # Setting up Git user
-          git config --global user.name 'yunohost-bot'
-          git config --global user.email 'yunohost-bot@users.noreply.github.com'
-          # Run the updater script
-          /bin/bash .github/workflows/updater.sh
-      - name: Commit changes
-        id: commit
-        if: ${{ env.PROCEED == 'true' }}
-        run: |
-          git commit -am "Upgrade to v$VERSION"
-      - name: Create Pull Request
-        id: cpr
-        if: ${{ env.PROCEED == 'true' }}
-        uses: peter-evans/create-pull-request@v4
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-          commit-message: Update to version ${{ env.VERSION }}
-          committer: 'yunohost-bot <yunohost-bot@users.noreply.github.com>'
-          author: 'yunohost-bot <yunohost-bot@users.noreply.github.com>'
-          signoff: false
-          base: testing
-          branch: ci-auto-update-v${{ env.VERSION }}
-          delete-branch: true
-          title: 'Upgrade to version ${{ env.VERSION }}'
-          body: |
-            Upgrade to v${{ env.VERSION }}
-          draft: false
diff --git a/check_process b/check_process
deleted file mode 100644
index eeea2bb..0000000
--- a/check_process
+++ /dev/null
@@ -1,26 +0,0 @@
-;; Test complet
-	; Manifest
-		domain="domain.tld"
-		path="/path"
-		is_public=1
-	; Checks
-		pkg_linter=1
-		setup_sub_dir=1
-		setup_root=1
-		setup_nourl=0
-		setup_private=1
-		setup_public=1
-		upgrade=1
-		# v1.6.7~ynh1
-		upgrade=1	from_commit=99330d46e45662b922de84e2e48ad1b15a63bb6e
-		# 1.6.12~ynh1
-		upgrade=1	from_commit=f16db30b1108870417f42e758da358a47df8c290
-		backup_restore=1
-		multi_instance=0
-		change_url=1
-;;; Options
-Email=
-Notification=none
-;;; Upgrade options
-	; commit=99330d46e45662b922de84e2e48ad1b15a63bb6e
-		name=v1.6.7~ynh1
diff --git a/conf/app.src b/conf/app.src
deleted file mode 100644
index 4574a00..0000000
--- a/conf/app.src
+++ /dev/null
@@ -1,7 +0,0 @@
-SOURCE_URL=https://github.com/duniter/cesium/releases/download/v1.7.10/cesium-v1.7.10-web.zip
-SOURCE_SUM=28fa6d8a94d72e1984d80b6b241ae94928a92b18a400c497fb499c3425adb164
-SOURCE_SUM_PRG=sha256sum
-SOURCE_FORMAT=zip
-SOURCE_IN_SUBDIR=false
-SOURCE_FILENAME=
-SOURCE_EXTRACT=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 9782b91..0e3a251 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -1,9 +1,8 @@
 #sub_path_only rewrite ^__PATH__$ __PATH__/ permanent;
 location __PATH__/ {
+    # Path to source
+    alias __INSTALL_DIR__/;
 
-  # Path to source
-  alias __FINALPATH__/;
-
-  # Include SSOWAT user panel.
-  include conf.d/yunohost_panel.conf.inc;
+    # Include SSOWAT user panel.
+    include conf.d/yunohost_panel.conf.inc;
 }
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 299463b..0000000
--- a/manifest.json
+++ /dev/null
@@ -1,52 +0,0 @@
-{
-    "name": "Cesium",
-    "id": "cesium",
-    "packaging_format": 1,
-    "description": {
-        "en": "Duniter client to manage wallets, certifications in a libre money",
-        "fr": "Client Duniter pour gérer ses portes-monnaie, les certifications au sein d’une monnaie libre"
-    },
-    "version": "1.7.10~ynh1",
-    "url": "https://github.com/duniter/cesium",
-    "upstream": {
-        "license": "AGPL-3.0-or-later",
-        "website": "https://cesium.app",
-        "code": "https://github.com/duniter/cesium"
-    },
-    "license": "AGPL-3.0-or-later",
-    "maintainer": {
-        "name": "Moul",
-        "email": "moul@moul.re",
-        "url": "https://moul.re"
-    },
-    "requirements": {
-        "yunohost": ">= 4.3.0"
-    },
-    "multi_instance": false,
-    "services": [
-        "nginx"
-    ],
-    "arguments": {
-        "install": [
-            {
-                "name": "domain",
-                "type": "domain"
-            },
-            {
-                "name": "path",
-                "type": "path",
-                "example": "/cesium",
-                "default": "/cesium"
-            },
-            {
-                "name": "is_public",
-                "type": "boolean",
-                "help": {
-                    "en": "If it is a public application, there will not have authentification",
-                    "fr": "Si l'application est publique, il n'y aura pas d'authentification"
-                },
-                "default": false
-            }
-        ]
-    }
-}
diff --git a/manifest.toml b/manifest.toml
new file mode 100644
index 0000000..259e22a
--- /dev/null
+++ b/manifest.toml
@@ -0,0 +1,57 @@
+#:schema https://raw.githubusercontent.com/YunoHost/apps/master/schemas/manifest.v2.schema.json
+
+packaging_format = 2
+
+id = "cesium"
+name = "Cesium"
+description.en = "Duniter client to manage wallets, certifications in a libre money"
+description.fr = "Client Duniter pour gérer ses portes-monnaie, les certifications au sein d’une monnaie libre"
+
+version = "1.7.10~ynh1"
+
+maintainers = ["Moul"]
+
+[upstream]
+license = "AGPL-3.0-or-later"
+website = "https://cesium.app"
+code = "https://github.com/duniter/cesium"
+
+[integration]
+yunohost = ">= 4.3.0"
+architectures = "all"
+multi_instance = false
+ldap = false
+sso = false
+disk = "50M" # FIXME: replace with an **estimate** minimum disk requirement. e.g. 20M, 400M, 1G, ...
+ram.build = "50M" # FIXME: replace with an **estimate** minimum ram requirement. e.g. 50M, 400M, 1G, ...
+ram.runtime = "50M" # FIXME: replace with an **estimate** minimum ram requirement. e.g. 50M, 400M, 1G, ...
+
+[install]
+    [install.domain]
+    type = "domain"
+
+    [install.path]
+    type = "path"
+    default = "/cesium"
+
+    [install.init_main_permission]
+    help.en = "If it is a public application, there will not have authentification"
+    help.fr = "Si l'application est publique, il n'y aura pas d'authentification"
+    type = "group"
+    default = false
+
+[resources]
+    [resources.sources.main]
+    url = "https://github.com/duniter/cesium/releases/download/v1.7.10/cesium-v1.7.10-web.zip"
+    sha256 = "28fa6d8a94d72e1984d80b6b241ae94928a92b18a400c497fb499c3425adb164"
+    in_subdir = false
+
+    autoupdate.strategy = "latest_github_release"
+    autoupdate.asset = "^cesium-v.*-web\\.zip$"
+
+    [resources.system_user]
+
+    [resources.install_dir]
+
+    [resources.permissions]
+    main.url = "/"
diff --git a/scripts/backup b/scripts/backup
index 13af146..342aced 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -10,26 +8,6 @@
 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)
-
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
 #=================================================
@@ -39,7 +17,7 @@ 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 NGINX CONFIGURATION
diff --git a/scripts/change_url b/scripts/change_url
index c0cb620..dca94fa 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC STARTING
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -9,79 +7,13 @@
 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=$YNH_APP_INSTANCE_NAME
-
-#=================================================
-# LOAD SETTINGS
-#=================================================
-ynh_script_progression --message="Loading installation settings..."
-
-# Needed for helper "ynh_add_nginx_config"
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-
-
-#=================================================
-# CHECK WHICH PARTS SHOULD BE CHANGED
-#=================================================
-ynh_script_progression --message="checking parts should be changed..."
-
-change_domain=0
-if [ "$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..."
+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..."
-
-ynh_systemd_action --service_name=nginx --action=reload
+# this will most likely adjust NGINX config correctly
+ynh_change_url_nginx_config
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/install b/scripts/install
index 150033d..d252e22 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -9,95 +7,33 @@
 source _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
-
-#=================================================
-# RETRIEVE ARGUMENTS FROM THE MANIFEST
-#=================================================
-
-domain=$YNH_APP_ARG_DOMAIN
-path_url=$YNH_APP_ARG_PATH
-is_public=$YNH_APP_ARG_IS_PUBLIC
-
-app=$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=is_public --value=$is_public
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Configuring system user..."
-
-# Create a system user
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 ynh_script_progression --message="Setting up source files..."
 
-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 -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
 
 #=================================================
-# NGINX CONFIGURATION
+# APP INITIAL CONFIGURATION
 #=================================================
-ynh_script_progression --message="Configuring NGINX web server..."
+ynh_script_progression --message="Adding $app's configuration files..." --weight=1
 
-# Create a dedicated NGINX config
-ynh_add_nginx_config
-
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Configuring permissions..."
-
-# If app is public, add url to SSOWat conf as skipped_uris and read-only mode
-if [ $is_public -eq 1 ]
-then
-  # unprotected_uris allows SSO credentials to be passed anyway.
-  ynh_permission_update --permission="main" --add="visitors"
-  # activate read-only
-  ynh_replace_string --match_string='"readonly": false,' --replace_string='"readonly": true,' --target_file="$final_path/config.js"
+if ynh_permission_has_user --permission=main --user=visitors; then
+    ynh_replace_string --match_string='"readonly": false,' --replace_string='"readonly": true,' --target_file="$install_dir/config.js"
 fi
 
 #=================================================
-# RELOAD NGINX
+# SYSTEM CONFIGURATION
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
+ynh_script_progression --message="Adding system configurations related to $app..." --weight=1
 
-ynh_systemd_action --service_name=nginx --action=reload
+# Create a dedicated NGINX config
+ynh_add_nginx_config
 
 #=================================================
 # END OF SCRIPT
diff --git a/scripts/remove b/scripts/remove
index e009d4b..20bb3b9 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -10,42 +8,13 @@ source _common.sh
 source /usr/share/yunohost/helpers
 
 #=================================================
-# LOAD SETTINGS
+# REMOVE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Loading installation settings..."
-
-app=$YNH_APP_INSTANCE_NAME
-
-domain=$(ynh_app_setting_get --app=$app --key=domain)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-
-
-#=================================================
-# REMOVE APP MAIN DIR
-#=================================================
-ynh_script_progression --message="Removing app main directory..."
-
-# Remove the app directory securely
-ynh_secure_remove --file="$final_path"
-
-#=================================================
-# REMOVE NGINX CONFIGURATION
-#=================================================
-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
 
-#=================================================
-# GENERIC FINALIZATION
-#=================================================
-# REMOVE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Removing the dedicated system user..."
-
-# Delete a system user
-ynh_system_user_delete --username=$app
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/scripts/restore b/scripts/restore
index 88298ee..a759789 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -10,65 +8,23 @@
 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_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)
-
-#=================================================
-# 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: $final_path "
-
-#=================================================
-# STANDARD RESTORATION STEPS
-#=================================================
-# RECREATE THE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..."
-
-# Create the dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # RESTORE THE APP MAIN DIR
 #=================================================
 ynh_script_progression --message="Restoring the app main directory..."
 
-ynh_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"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
 
 #=================================================
-# RESTORE THE NGINX CONFIGURATION
+# RESTORE SYSTEM CONFIGURATIONS
 #=================================================
-ynh_script_progression --message="Restoring the NGINX web server 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"
 
-#=================================================
-# GENERIC FINALIZATION
 #=================================================
 # RELOAD NGINX
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index b8d04cc..6fcd61d 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -1,7 +1,5 @@
 #!/bin/bash
 
-#=================================================
-# GENERIC START
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
@@ -9,122 +7,34 @@
 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=$app --key=path)
-final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-is_public=$(ynh_app_setting_get --app=$app --key=is_public)
-
-#=================================================
-# CHECK VERSION
-#=================================================
-ynh_script_progression --message="Restoring the NGINX web server configuration..."
-
-upgrade_type=$(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 () {
-	# Restore it if the upgrade fails
-	ynh_restore_upgradebackup
-}
-# Exit if an error occurs during the execution of the script
-ynh_abort_if_errors
-
-#=================================================
-# ENSURE DOWNWARD COMPATIBILITY
-#=================================================
-ynh_script_progression --message="Ensuring downward compatibility..."
-
-# 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
-
-# Cleaning legacy permissions
-if ynh_legacy_permissions_exists; then
-	ynh_legacy_permissions_delete_all
-
-	ynh_app_setting_delete --app=$app --key=is_public
-fi
-
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Making sure dedicated system user exists..."
-
-# Create a dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
+ynh_script_progression --message="Upgrading source files..."
 
-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
 
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir="$final_path"
+chmod -R o-rwx "$install_dir"
+chown -R "$app:www-data" "$install_dir"
+
+#=================================================
+# UPDATE A CONFIG FILE
+#=================================================
+ynh_script_progression --message="Updating $app's configuration files..." --weight=1
+
+if ynh_permission_has_user --permission=main --user=visitors; then
+    ynh_replace_string --match_string='"readonly": false,' --replace_string='"readonly": true,' --target_file="$install_dir/config.js"
 fi
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-
 #=================================================
-# 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
 
-if [ "$path_url" != "/" ]
-then
-	ynh_replace_string "^#sub_path_only" "" "/etc/nginx/conf.d/$domain.d/$app.conf"
-fi
-
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-ynh_script_progression --message="Securing files and directories..."
-
-# Set permissions on app files
-chown -R www-data: $final_path
-
-#=================================================
-# SETUP SSOWAT
-#=================================================
-ynh_script_progression --message="Upgrading configuring permissions..."
-
-# If app is public, add url to SSOWat conf as skipped_uris and read-only mode
-if [[ $is_public -eq 1 ]]; then
-	# unprotected_uris allows SSO credentials to be passed anyway.
-	ynh_permission_update --permission="main" --add="visitors"
-	# activate read-only
-	ynh_replace_string --match_string='"readonly": false,' --replace_string='"readonly": true,' --target_file="$final_path/config.js"
-fi
-
-#=================================================
-# RELOAD NGINX
-#=================================================
-ynh_script_progression --message="Reloading NGINX web server..."
-
-ynh_systemd_action --service_name=nginx --action=reload
-
 #=================================================
 # END OF SCRIPT
 #=================================================
diff --git a/tests.toml b/tests.toml
new file mode 100644
index 0000000..eadb4a4
--- /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 = [ "install.nourl" ]
+
+    test_upgrade_from.99330d46e45662b922de84e2e48ad1b15a63bb6e.name = "v1.6.7~ynh1"
+    test_upgrade_from.f16db30b1108870417f42e758da358a47df8c290.name = "v1.6.12~ynh1"