How can be update software
How can be update software
iPhone 6s, iOS 12
If you have an iPhone that is showing iOS 12.5.5 is up to date, then you have an iPhone 6, not a 6s, and the iPhone 6 cannot be updated from iOS 12.5.5. It does not have the hardware to support a newer iOS. When you go to Settings>General>Software Update, if it shows up to date then you cannot update it.