It is very easy to backup iPhone data with the help of third-party iStonsoft iPhone Data Recovery. With the help of comprehensive software you can easily transfer data of your smartphone to your PC within few simple clicks. So, if iTunes fails to backup your data then third-party software could be best option for you.
In order to recover iPhoen from old bacukp, run through the following 4 easy steps:
STEP 1:Make sure iTunes doesn’t automatically sync with iPhone when connected.
STEP 2:Connect your iPhone to iTunes and Back up by selecting Preferences > Backup from iTunes, or right-click on your iPhone and choose back up.
STEP 3:Restore your iPhone by selecting Restore under Preferences.