Here are the steps that has to be followed in-order to install and utilize Chronus to create backups of your iPhone.
Please remember that Chronus is a 3rd party application for your iPhone and iPod Touch.
The first step require you to tap in-order to launch Cydia from your SpringBoard, select the Sections tab which you can find at the bottom right of the screen.
Now press to select Utilities.
Press to select Chronus from the list of packages.
Press the Install button(top right hand corner of the screen).
Press the Confirm button at the top right hand corner of the screen.
After the installation is completed successfully press the Return to Cydia button.
Tap the Home button to return to your SpringBoard. You will notice a new Chronus icon on your springboard.