diff --git a/scripts/upgrade b/scripts/upgrade
index b8f752c..26db1a8 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -43,7 +43,7 @@ upgrade_type=$(ynh_check_app_version_changed)
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
-ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
+#ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 
 #
 # N.B. : the followings setting migrations snippets are provided as *EXAMPLES*
@@ -57,15 +57,6 @@ ynh_script_progression --message="Ensuring downward compatibility..." --weight=1
 #	ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 #fi
 
-# 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 nobody installed your app before 4.1,
-### then you may safely remove these lines
-
 #=================================================
 # BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
 #=================================================
@@ -93,8 +84,6 @@ ynh_systemd_action --service_name=$app --action="stop"
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 
-# siwi: to be checked
-
 if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	myynh_install
@@ -137,7 +126,6 @@ ynh_add_systemd_config --others_var="conf_file start_file"     # substitute __CO
 #=================================================
 # MODIFY A CONFIG FILE
 #=================================================
-#siwi : to be checked
 
 ### Verify the checksum of a file, stored by `ynh_store_file_checksum` in the install script.
 ### And create a backup of this file if the checksum is different. So the file will be backed up if the admin had modified it.
@@ -145,16 +133,16 @@ ynh_backup_if_checksum_is_different --file="$conf_file"
 
 
 cp ../conf/app.conf "$conf_file"
-#if [ -n "$(uname -m | grep arm)" ];		# check CPU (raspberry is armxx)
-#    then
-#    cat ../conf/raspberry.conf >> "$conf_file"
-#fi
 
 ynh_replace_string --match_string="__PORT__"      --replace_string=$port           --target_file="$conf_file"
 ynh_replace_string --match_string="__MEDIADIR__"  --replace_string=$media_dir      --target_file="$conf_file"
 ynh_replace_string --match_string="__CACHE_DIR__" --replace_string=$work_dir/cache --target_file="$conf_file"
 ynh_replace_string --match_string="__DATA_DIR__"  --replace_string=$work_dir/data  --target_file="$conf_file"
 
+#=================================================
+# STORE THE CONFIG FILE CHECKSUM
+#=================================================
+
 # Recalculate and store the checksum of the file for the next upgrade.
 ynh_store_file_checksum --file="$conf_file"
 
@@ -163,10 +151,11 @@ ynh_store_file_checksum --file="$conf_file"
 #=================================================
 # SECURE FILES AND DIRECTORIES
 #=================================================
-# siwi : to be checked
+# siwi okay
 
-# Set permissions on app files
+# user mopidy needs permission to mkdir on final_path
 chown -R root: $final_path
+chown $app: $final_path
 
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
@@ -174,6 +163,7 @@ chown -R root: $final_path
 ynh_script_progression --message="Integrating service in YunoHost..." --weight=1
 
 yunohost service add $app --log_type systemd --description "this is mopidy, a music server"
+
 #=================================================
 # START SYSTEMD SERVICE
 #=================================================
@@ -184,14 +174,14 @@ ynh_systemd_action --service_name=$app --action="start"
 #=================================================
 # RELOAD NGINX
 #=================================================
-ynh_script_progression --message="Reloading NGINX web server..." --weight=1
+ynh_script_progression --message="Reloading NGINX web server..."
 
 ynh_systemd_action --service_name=nginx --action=reload
 
 #=================================================
 # PROVIDE ADDITIONAL SHELL COMAND 
 #=================================================
-ynh_script_progression --message="Provide additional shell comand..." --weight=1
+ynh_script_progression --message="Provide additional shell comand..."
 
 cp -a ../sources/extra_files/mopidyctl "$cmd_file"
 ynh_replace_string --match_string="__APP__"         --replace_string=$app        --target_file="$cmd_file"
@@ -200,13 +190,6 @@ ynh_replace_string --match_string="__CONF_FILE__"   --replace_string=$conf_file
 
 chmod +x "$cmd_file"
 
-#=================================================
-# SCAN LOCAL MEDIA DIRECTORY
-#=================================================
-ynh_script_progression --message="Scan local media directory..." --weight=3
-
-"$cmd_file" local scan
-
 #=================================================
 # END OF SCRIPT
 #=================================================