If you have the iOS 8.1.2 jailbreak installed and need to restore your iPhone, use these apps for the process so that you don't lose your jailbreak.

By downloading the final build of iOS 8 as it was released as an IPSW file, you can restore your iPhone to the latest stable version.

Here's how to restore an old iPhone to a new iPhone, recover data from a backup, or go back to an older version of iOS by wiping your iPhone and restoring from a backup.

ITunes will download iOS 8.0, the latest version available (iOS 8.0.1 has been pulled), and update your iPhone. When the update completes, you can go through the setup to restore your iPhone ...

Want to remove iOS 12 and downgrade to iOS 11? Here's how to restore your device to earlier software.

Fortunately, you can restore your iPhone or iPad to the previous version of iOS. If you made an archived backup before you installed the beta, you can remove the ‌iOS 15 beta and restore the backup.