My iPhone 4 Model 2422 won’t update from iOS 6.1.3 to iOS 7.1.2 can someone help me with this also I do not have access to a laptop
I got this iPhone 4 for free and I repaired the battery because it was makeing the back of the glass lift up so after I replaced it I wiped the info off of it and I tried to update it but when I try to update it, it just doesn’t work the button turns gray then turns back to black so please help me
Earlier iPhone models