1. Download and Install iBackup Extractor.
2. Start up iBackup Extractor by double-clicking the iBackup Extractor icon on your desktop.
Selecting which backup will be accessed:
Once the program is launched, you can access a drop down list containing all the backups available on the backup file (defaults to iTunes Backup File). On it, you can select which device's backup you wish to access.
After this is done, you can start browsing through your backed-up data, and extract it onto your PC/Mac. You can browse through your Calendars, Contacts, Notes, Messages, Photos, Internet browsing history and your iPhone call logs and extract these files to your computer.