Giratina greatness(original form)

First complete the national pokedex and win to the elite 4.Then go to spring path and cynthia wont be blocking the door anymore.Find your way through turnback cave.Heres a tip keep going to the left almost the whole time.Oh I almost forgot you cant use escape ropes in turnback cave so I would recommend saving before going in.When you find giratina if you saved outside the cave then dont save in front of giratina.If you didn't save then save in front of giratina.After you catch giratina find your way out of the cave and save.REMEMBER YOU CANT USE ESCAPE ROPES!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!so just go in IF YOU DARE.