diff --git a/conf/app.src b/conf/app.src
deleted file mode 100644
index bc0c0f7..0000000
--- a/conf/app.src
+++ /dev/null
@@ -1,5 +0,0 @@
-SOURCE_URL=https://github.com/thelounge/thelounge/archive/v4.2.0.tar.gz
-SOURCE_SUM=6119c0692f03678940848ec19a8095ba67f8fdba42bb12481205314eabc0672d
-SOURCE_SUM_PRG=sha256sum
-ARCH_FORMAT=tar.gz
-SOURCE_IN_SUBDIR=true
diff --git a/conf/deb.src b/conf/deb.src
index 6bf6142..171fdba 100644
--- a/conf/deb.src
+++ b/conf/deb.src
@@ -1,5 +1,5 @@
-SOURCE_URL=https://github.com/thelounge/thelounge/releases/download/v4.3.0-pre.6/thelounge_4.3.0.pre.6_all.deb
-SOURCE_SUM=0224f2bf7b3223358b92be8fa5a5a68fd93b1547f791ed20f9107c8e5933256a
+SOURCE_URL=https://github.com/thelounge/thelounge/releases/download/v4.3.0/thelounge_4.3.0_all.deb
+SOURCE_SUM=60eaa836b677990a1508c86ded79f7bde8efb365240e5a0c60567757f5ea70e5
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=deb
 SOURCE_IN_SUBDIR=true
diff --git a/conf/systemd.service b/conf/systemd.service
index 0f6c708..8c0e0cd 100644
--- a/conf/systemd.service
+++ b/conf/systemd.service
@@ -7,7 +7,6 @@ Wants=network-online.target
 Type=simple
 User=__APP__
 Group=__APP__
-Environment="THELOUNGE_HOME=/home/yunohost.app/__APP__/"
 ExecStart=/usr/bin/thelounge start
 Restart=on-failure
 RestartSec=5
diff --git a/scripts/_common.sh b/scripts/_common.sh
index b3656bc..ba69dff 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,7 +5,7 @@
 #=================================================
 
 # nodejs version
-nodejs_version=14
+nodejs_version=16
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/install b/scripts/install
index a340da1..1d8d2ef 100644
--- a/scripts/install
+++ b/scripts/install
@@ -73,10 +73,7 @@ ynh_exec_warn_less dpkg -i $tempdir/thelounge.deb
 # CREATE DEDICATED USER
 #=================================================
 
-# pushd $final_path
-#  	ynh_use_nodejs
-#  	ynh_exec_as $app env "$ynh_node_load_PATH" thelounge add $admin
-# popd
+# ynh_exec_as $app thelounge add $admin
 
 #=================================================
 # NGINX CONFIGURATION
@@ -86,36 +83,17 @@ ynh_script_progression --message="Configuring NGINX web server..."
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-# #=================================================
-# # CREATE DATA DIRECTORY
-# #=================================================
-# ynh_script_progression --message="Creating a data directory..."
+#=================================================
+# SPECIFIC SETUP
+#=================================================
+# MODIFY A CONFIG FILE
+#=================================================
+ynh_script_progression --message="Modifying a config file..."
 
-# datadir=/home/yunohost.app/$app
-# ynh_app_setting_set --app=$app --key=datadir --value=$datadir
+ynh_add_config --template="../conf/config.js" --destination="/etc/thelounge/config.js"
 
-# mkdir -p $datadir
-
-# chmod 750 "$datadir"
-# chmod -R o-rwx "$datadir"
-# chown -R $app:www-data "$datadir"
-
-# #=================================================
-# # SPECIFIC SETUP
-# #=================================================
-# # MODIFY A CONFIG FILE
-# #=================================================
-# ynh_script_progression --message="Modifying a config file..."
-
-# ynh_add_config --template="../conf/config.js" --destination="$datadir/config.js"
-
-# #=================================================
-# # SETUP SYSTEMD
-# #=================================================
-# ynh_script_progression --message="Configuring a systemd service..."
-
-# ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/systemd.service"
-# ynh_add_systemd_config
+chmod 400 "/etc/thelounge/config.js"
+chown $app:$app "/etc/thelounge/config.js"
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
diff --git a/scripts/restore b/scripts/restore
index 13eded8..6a2d159 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -29,15 +29,6 @@ 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=$app --key=final_path)
-datadir=$(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
@@ -48,38 +39,6 @@ ynh_script_progression --message="Restoring the NGINX configuration..."
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
-#=================================================
-# CREATE DEDICATED USER
-#=================================================
-ynh_script_progression --message="Recreating the dedicated system user..."
-
-# Create a 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 $app main directory..."
-
-ynh_restore_file --origin_path="$final_path"
-
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-
-#=================================================
-# RESTORE THE CONFIG
-#=================================================
-ynh_script_progression --message="Restoring the config path..."
-
-ynh_restore_file --origin_path="$datadir" --not_mandatory
-
-mkdir -p $datadir
-
-chmod 750 "$datadir"
-chmod -R o-rwx "$datadir"
-chown -R $app:www-data "$datadir"
-
 #=================================================
 # SPECIFIC RESTORATION
 #=================================================
@@ -90,8 +49,16 @@ ynh_script_progression --message="Reinstalling dependencies..."
 # Install Nodejs
 ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
-# Install Yarn
-ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
+tempdir="$(mktemp -d)"
+ynh_setup_source --dest_dir=$tempdir --source_id=deb
+ynh_exec_warn_less dpkg -i $tempdir/thelounge.deb
+
+#=================================================
+# RESTORE VARIOUS FILES
+#=================================================
+ynh_script_progression --message="Restoring various files..."
+
+ynh_restore_file --origin_path="/etc/$app/"
 
 #=================================================
 # RESTORE SYSTEMD
diff --git a/scripts/upgrade b/scripts/upgrade
index 3ed90c3..70e53a5 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -18,14 +18,11 @@ 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)
-datadir=$(ynh_app_setting_get --app=$app --key=datadir)
 port=$(ynh_app_setting_get --app=$app --key=port)
 
 #=================================================
 # CHECK VERSION
 #=================================================
-ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)
 
@@ -49,19 +46,6 @@ ynh_abort_if_errors
 #=================================================
 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
-
-# If datadir doesn't exist, create it
-if [ -z "$datadir" ]; then
-	datadir=/home/yunohost.app/$app
-	mkdir -p /home/yunohost.app/$app
-	ynh_app_setting_set --app=$app --key=datadir --value=$datadir
-fi
-
 # Cleaning legacy permissions
 if ynh_legacy_permissions_exists; then
 	ynh_legacy_permissions_delete_all
@@ -78,14 +62,6 @@ ynh_script_progression --message="Stopping a systemd service..."
 
 ynh_systemd_action --service_name=$app --action=stop --log_path=systemd
 
-#=================================================
-# 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
 #=================================================
@@ -94,15 +70,13 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..."
 
-	ynh_secure_remove --file="$final_path"
-	# Download, check integrity, uncompress and patch the source from app.src
-	ynh_setup_source --dest_dir=$final_path
-fi
+	ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
 
-chmod 750 "$final_path"
-chmod -R o-rwx "$final_path"
-chown -R $app:www-data "$final_path"
-chown -R $app:www-data $datadir
+	tempdir="$(mktemp -d)"
+	ynh_setup_source --dest_dir=$tempdir --source_id=deb
+	ynh_exec_warn_less dpkg -i $tempdir/thelounge.deb
+
+fi
 
 #=================================================
 # NGINX CONFIGURATION
@@ -112,39 +86,11 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..."
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
-#=================================================
-# UPGRADE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Upgrading dependencies..."
-
-# Install Nodejs
-ynh_exec_warn_less ynh_install_nodejs --nodejs_version=$nodejs_version
-
-# Install Yarn
-ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ stable main" --package="yarn" --key="https://dl.yarnpkg.com/debian/pubkey.gpg"
-
-#=================================================
-# SPECIFIC UPGRADE
-#=================================================
-# UPGRADE THE LOUNGE
-#=================================================
-
-if [ "$upgrade_type" == "UPGRADE_APP" ]
-then
-	pushd $final_path
-	 	ynh_use_nodejs
-		ynh_exec_warn_less NODE_ENV=production yarn install 
-		yarn add webpack webpack-dev-server --dev
-		ynh_exec_warn_less NODE_ENV=production yarn build
-	popd
-fi
-
 #=================================================
 # SETUP SYSTEMD
 #=================================================
 ynh_script_progression --message="Upgrading systemd configuration..."
 
-ynh_replace_string --match_string="__ENV_PATH__" --replace_string="$PATH" --target_file="../conf/systemd.service"
 ynh_add_systemd_config
 
 #=================================================