Press to launch Installer from your Springboard.
Press Donate Later and don't forget to do that!
Press to select the Install tab at the bottom of the screen.
Press to select Utilities from the list of Categories.
Press to select Boss Tool from the list of Packages.
Press to select the Install button at the top right of the screen.
Press to select the large Install button that appears.
When the install completes you will be returned to the Categories Menu. Press the Home button to return to your Springboard. Now press BossTool to launch the application.
Press to select Free Disk Space from the menu.
Press to select Relocate Fonts from the menu. Note we could relocate other stuff but fonts is about 84MB so that is more then enough! Also take notice this screen will display how much free space you currently have available.
Press the large Do It! button to continue.
After a few minutes you will be returned to the Free Disk Space menu and you will now see 84MB extra space on your root file system!