iTunes Device Restore
If you find the need to restore your device to a prior backup that you made to your computer through iTunes native device backup this is how it is performed. This should happen automatically if the device is set to iTunes backup management instead of iCloud backup management.
NOTE: This erases all data, and will restore your device’s data to the date of the backup. Therefore, make sure if you had other photos that you would not like to lose that they are copied off of the device as well as other app data should be backed up as it will roll back all app data as well.
Video link: http://youtu.be/mVFkAkIxS5w