diff --git a/README.md b/README.md
index 8cad858..0e6c335 100644
--- a/README.md
+++ b/README.md
@@ -1,8 +1,8 @@
-Seafile For yunohost
+Seafile for YunoHost
 =================
 
-[![Integration level](https://dash.yunohost.org/integration/seafile.svg)](https://ci-apps.yunohost.org/ci/apps/seafile%20%28Community%29/lastBuild/consoleFull)  
-[![Install seafile with YunoHost](https://install-app.yunohost.org/install-with-yunohost.png)](https://install-app.yunohost.org/?app=seafile)
+[![Integration level](https://dash.yunohost.org/integration/seafile.svg)](https://dash.yunohost.org/appci/app/seafile) ![](https://ci-apps.yunohost.org/ci/badges/seafile.status.svg) ![](https://ci-apps.yunohost.org/ci/badges/seafile.maintain.svg)  
+[![Install seafile with YunoHost](https://install-app.yunohost.org/install-with-yunohost.svg)](https://install-app.yunohost.org/?app=seafile)
 
 > *This package allow you to install seafile quickly and simply on a YunoHost server.  
 If you don't have YunoHost, please see [here](https://yunohost.org/#/install) to know how to install and enjoy it.*
@@ -59,11 +59,10 @@ for more information.
 
 Since seafile 6.3 the i386 architecture is no more supported.
 
-Seafile no longer distribute binary for generic armhf architectures but rpi binary could work.
+Seafile don't distribute binary for generic armhf architectures but rpi binary generally work on all arm board.
 
-* x86-64b - [![Build Status](https://ci-apps.yunohost.org/ci/logs/seafile%20(Community).svg)](https://ci-apps.yunohost.org/ci/apps/seafile/)
-* ARMv8-A - [![Build Status](https://ci-apps-arm.yunohost.org/ci/logs/seafile%20(Community).svg)](https://ci-apps-arm.yunohost.org/ci/apps/seafile/)
-* Jessie x86-64b - [![Build Status](https://ci-stretch.nohost.me/jenkins/job/seafile%20(Community).svg)](https://ci-stretch.nohost.me/jenkins/job/seafile/)
+* x86-64 - [![Build Status](https://ci-apps.yunohost.org/ci/logs/seafile%20%28Apps%29.svg)](https://ci-apps.yunohost.org/ci/apps/seafile/)
+* ARMv8-A - [![Build Status](https://ci-apps-arm.yunohost.org/ci/logs/seafile%20%28Apps%29.svg)](https://ci-apps-arm.yunohost.org/ci/apps/seafile/)
 
 <!--Limitations
 ------------
@@ -73,14 +72,7 @@ Seafile no longer distribute binary for generic armhf architectures but rpi bina
 Additional informations
 -----------------------
 
-### Change URL
-
-Since now it's possible to change domain or the url of seafile.
-
-To do this run : `yunohost app change-url seafile -d new_domain.tld -p PATH new_path`
-
-Links
------
+### Links
 
  * Report a bug: https://github.com/YunoHost-Apps/seafile_ynh/issues
  * App website: https://www.seafile.com
@@ -88,19 +80,44 @@ Links
 
 ---
 
-Install
--------
+### Install
 
 From command line:
 
-`sudo yunohost app install -l seafile https://github.com/YunoHost-Apps/seafile_ynh`
+`yunohost app install seafile`
 
-Upgrade
--------
+### Upgrade
 
 From command line:
 
-`sudo yunohost app upgrade seafile -u https://github.com/YunoHost-Apps/seafile_ynh`
+`yunohost app upgrade seafile`
+
+### Backup
+
+This app use now the core-only feature of the backup. To keep the integrity of the data and to have a better guarantee of the restoration is recommended to proceed like this:
+
+- Stop seafile service with theses following command:
+
+`systemctl stop seafile.service seahub.service`
+
+- Launch the backup of seafile with this following command:
+
+`yunohost backup create --app seafile`
+
+- Do a backup of your data with your specific strategy (could be with rsync, borg backup or just cp). The data is stored in `/home/yunohost.app/seafile-data`.
+- Restart the seafile service with theses command:
+
+`systemctl start seafile.service seahub.service`
+
+### Remove
+
+Due of the backup core only feature the data directory in `/home/yunohost.app/seafile-data` **is not removed**. It need to be removed manually to purge app user data.
+
+### Change URL
+
+Since now it's possible to change domain or the url of seafile.
+
+To do this run : `yunohost app change-url seafile -d new_domain.tld -p PATH new_path`
 
 Developers infos
 ----------------
diff --git a/scripts/backup b/scripts/backup
index f081cdb..df96919 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -22,6 +22,10 @@ db_pwd=$(ynh_app_setting_get --app $app --key mysqlpwd)
 final_path=$(ynh_app_setting_get --app $app --key final_path)
 seafile_user=$app
 
+if [[ ! "$(systemctl status seafile)" =~ "Active: inactive (dead)" ]] || [[ ! "$(systemctl status seahub)" =~ "Active: inactive (dead)" ]]; then
+    ynh_print_warn --message="It's hightly recommended to make your backup when the service is stopped. Please stop seafile service and seahub service with this command before to run the backup 'systemctl stop seafile.service seahub.service'"
+fi
+
 #=================================================
 # STANDARD BACKUP STEPS
 #=================================================
@@ -30,7 +34,7 @@ seafile_user=$app
 ynh_script_progression --message="Backing up code..." --weight=3
 ynh_backup --src_path $final_path
 ynh_script_progression --message="Backing up user data..." --weight=10
-ynh_backup --src_path /home/yunohost.app/seafile-data --dest_path "data"
+ynh_backup --src_path=/home/yunohost.app/seafile-data --dest_path="data" --is_big=1
 ynh_script_progression --message="Backing up configuration..."
 ynh_backup --src_path /etc/nginx/conf.d/$domain.d/${app}.conf
 ynh_backup --src_path /etc/systemd/system/seafile.service
diff --git a/scripts/install b/scripts/install
index 514d44d..518c271 100644
--- a/scripts/install
+++ b/scripts/install
@@ -40,6 +40,11 @@ ynh_webpath_register --app $app --domain $domain --path_url $path_url
 
 # Check Final Path availability
 test ! -e "$final_path" || ynh_die --message "This path already contains a folder"
+if [ -e "$seafile_data" ]; then
+    old_data_dir_path="$seafile_data$(date '+%Y%m%d.%H%M%S')"
+    ynh_print_warn "A data directory already exist. Data was renamed to $old_data_dir_path"
+    mv "$seafile_data" "$old_data_dir_path"
+fi
 
 # Find available ports
 ynh_script_progression --message="Finding available ports..."
@@ -103,6 +108,8 @@ chmod +x expect_scripts/install.exp
 chmod +x $final_path/seafile-server-$seafile_version/setup-seafile-mysql.sh
 expect_scripts/install.exp "$final_path/seafile-server-$seafile_version" "$server_name" "$domain" "$seafile_data" "$fileserver_port" "$db_pwd"
 
+sleep 3
+
 # Update seafile config
 ynh_replace_string --match_string http:// --replace_string https://  --target_file $final_path/conf/ccnet.conf
 ynh_replace_string --match_string :8000   --replace_string $path_url --target_file $final_path/conf/ccnet.conf
diff --git a/scripts/remove b/scripts/remove
index 04a928a..4e3653c 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -40,8 +40,6 @@ ynh_secure_remove --file=/var/log/seafile
 ynh_script_progression --message="Removing code..."
 ynh_secure_remove --file=/var/www/$app
 ynh_secure_remove --file=/opt/yunohost/$app
-ynh_script_progression --message="Removing user data..."
-ynh_secure_remove --file=/home/yunohost.app/seafile-data
 ynh_secure_remove --file=/tmp/seahub_cache
 
 # Remove databases
@@ -78,4 +76,7 @@ ynh_script_progression --message="Removing seafile service..."
 yunohost service remove seafile
 yunohost service remove seahub
 
+ynh_print_info --message="Due of the backup core only feature the data directory in '/home/yunohost.app/seafile-data' was not removed. It need to be removed manually to purge app user data."
+
 ynh_script_progression --message="Removal of $app completed" --last
+sleep 1
diff --git a/scripts/upgrade b/scripts/upgrade
index 6d38628..4abd384 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -72,10 +72,10 @@ if [ $final_path == "/var/www/$app" ]; then
     ynh_app_setting_set --app $app --key final_path --value $final_path
     test -e /var/log/seafile && rm /var/log/$app
     if ! [ -z "$(ls -A $final_path/seafile_data)" ]; then
-        # Data directory empty, so considere that all data are already in /home/yunohost.app/seafile
-        mv /opt/yunohost/$app/seafile-data/* /home/yunohost.app/seafile-data/
+        # Data directory NOT empty, transfer data to /home/yunohost.app/seafile
+        mv $final_path/seafile_data/* /home/yunohost.app/seafile-data/
         ynh_secure_remove $final_path/seafile_data
-        ln -s $seafile_data $final_path/seafile_data
+        ln -s /home/yunohost.app/seafile-data $final_path/
     fi
     ln -s $final_path/logs /var/log/seafile
     set_permission