You are restoring an iCloud backup from a higher iOS version to a lower iOS version, and it will prompt you to update the software.So here, we conclude the mainsprings as follows: Many factors don't allow you to restore the backup to your new iPhone. Why Can't I Restore My iPhone from Backup? How to Fix 'Backup Cannot Be Restored to This iPhone because the Software on the iPhone Is Too Old'? Part 1. If you can't restore the backup to a new iPhone because the software on the iPhone is too old, you can follow this tutorial to fix the problem to normal. Out of Apple's limitation and security mechanism, you must update the iPhone to the latest version of iOS before it can be restored from this backup. Sometimes, you may find the new iPhone won't restore from iTunes backup and receive the prompt 'the backup of iPhone cannot be restored to this iPhone because the software on the iPhone is too old.' This error usually occurs when you try to restore the iTunes backup synced from a newer iOS to an older iOS version. Is this possible? Trying to restore my backup to 9.1 from a 9.3 backup.'

'Bypass iPhone software is too old to restore from backup.

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