If you have an iOS 14 backup, restore it or set up your iPhone as new.Īpple unveiled the exciting new iOS 15, and we already have a post on how to download and install it.Next, put your iPhone in recovery mode to get iOS 14 on it.You will have to download the iOS 14 IPSW file, which is around 5GB.What to know about downgrading iOS 15 beta to iOS 14