I'm giving my iPhone 4S to my mum. It's currently on iOS 7.something. I don't want to upgrade it to iOS 8 for her (which she's not bothered about ) & make it more laggy than what it is. She'll probably want one or two of the apps currently on there, but they were bought with my account, so i don't know if that's possible when she signs in on her account on there. Basically she'll be wanting everything erased - texts, emails, photos & videos, app settings (such as like my facebook login). I guess it would be just easier to erase all apps & let her install the ones she wants on her own account. But how do you erase the phone but without having it updated to iOS 8? I did a bit of reading on it & the results were conflicting - some people said it would require an update to the latest iOS, but others said you can erase it & keep it on the iOS that is currently installed.