Need mo internet jan mas ok kung mabilis restore mo pero dapat alam mo ang Apple I.D/icloud account na naka sign in sa iphone 6s plus mo
Download and install mo itunes
Tapoa download and install ko 3uTools don ka magrestore
Eto tutorial if want mo mag back up using 3uTools
https://phc.onl/#forbidden#/nJK-rm3_wj0
Sana makatulong