If you do the update through Apple it will update to the latest = iOS 9. I don't believe iOS 8.4.1 is still being signed by Apple. You can probably dig around and find somewhere that iOS 8.4.1 is still available.
If you do the update through Apple it will update to the latest = iOS 9. I don't believe iOS 8.4.1 is still being signed by Apple. You can probably dig around and find somewhere that iOS 8.4.1 is still available.