hi, just wondering which firmware i would use for my iphone 5, when i go to the site i use there is iphone 5 global and iphone 5 gsm firmwares, you can tell which model you have by looking at the back of your phone but i happen to have a carbon fibre sticker thing to protect the back of my iphone so i cant see it, im on ee network if that makes any difference, anybody know ? thanks