step 1 : open winScp and upload files
step 2 : login putty 
step 3 : use the following command to update service
	sudo systemctl stop WP500
	sudo cp WP500_application.jar /usr/bin/
	sudo systemctl start WP500
	sudo cp ROOT.war /opt/apache-tomcat-9.0.85/webapps/
	sudo reboot