Restore from "iOS7 backup" to an iOS6 phone A friend upgraded my device to iOS7. It didn't work properly so I downgraded it a few days later to iOS6.

I have backups both in iCloud and on OS X (iTunes). When I try to restore either I get a message:


  To restore this iPhone from this backup, you must first set up the
  iPhone as new and restore the software to the latest version.


Without this backup I am very inconvenienced, so I ask is it possible to restore an iPhone from a iOS7 Backup if you downgraded the phone to iOS6?
You can edit the info.plist file. I successfully restored my backup to 6.1.4. Edit the build version to your ipsw's build version and product version to the version you want to downgrade to. Using plist editors in windows are highly recommended.

Windows: C:\Users[Your username]\AppData\Roaming\Apple Computer\MobileSync\Backup[Your UDID]

Mac: ~/Library/Application Support/MobileSync/Backup/[Your UDID]/

After that just restore the backup normally. If an error popped up at the end, ignore it. Hope this helps.