Zeppelin Tweak Lets You Customize Your Carrier Logo
Zeppelin is a MobileSubstrate tweak that enables easy Carrier Logo switching in iOS, reports ModMyi.
Zeppelin doesn't just change your carrier text, it lets you replace that text with an image. The tweak includes a few default images: Android, Aperture Science, Assassin's Creed, Batman, Beats by dre, Blue Cloud, Infiniti, Pac-Man, Space Invaders, Superman, Triforce.
If you want to add your own icons you can use iFile or SSH to place them in /Library/Zeppelin.
Zeppelin is a free download from the ModMyi Cydia Repository.