diff --git a/scripts/upgrade b/scripts/upgrade
index 6f892f9..16a09d9 100755
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -80,8 +80,28 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]
 then
 	ynh_script_progression --message="Upgrading source files..."
 
+	# Create a temporary directory
+	tmpdir="$(mktemp -d)"
+	# Backup the config file in the temp dir
+	cp -a "$final_path/config/config.ini.php" "$tmpdir/config.ini.php"
+
+	# Remove the app directory securely
+	ynh_secure_remove --file=$final_path
+
 	# Download, check integrity, uncompress and patch the source from app.src
 	ynh_setup_source --dest_dir="$final_path"
+
+	#Copy the admin saved settings from tmp directory to final path	
+	cp -a "$tmpdir/config.ini.php" "$final_path/config/config.ini.php" 
+
+	# Remove the tmp directory securely
+	ynh_secure_remove --file="$tmpdir"
+
+	pushd "$final_path"
+		chown -R $app: $final_path/tmp/* 
+		./console core:update
+	popd
+
 fi
 
 #=================================================