Last week I brought me a new iphone 6s 64g and to set it up I used my old icloud account. but towards the end it had 3options to either backup from icloud , itunes or skip and I chose "backup from icloud" but after that my phone froze now I can't get into it at all. It just says " slide to upgrade" please help how do I cancel this backup so I could start using my phone.
