Whited00r, which cobbles together some of the standout features from iOS 4 and iOS 5 — multitasking, folders, background customization, etc. — in an unsanctioned package that seeks to inject new life into Apple's older products. Best of all, the custom firmware can be sideloaded from directly within iTunes without any sort of prior jailbreak.
Though you wouldn't know it at first glance, Whited00r is actually a heavily modified version of iOS 3.1.3 (which legacy devices remain forever stuck on) that's been remodeled with the reflective dock and other UI changes shipped on newer products. Multitasking and folders behave just as you'd expect, and there's also a Reminders app modeled directly after what's found in iOS 5. Still, there are some drawbacks to consider before installing. First, you'll need to continue living without Notification Center functionality, as it's simply not included. Further, the App Store is only accessible by way of Safari direct links; there's no icon for quickly entering Apple's market (though Cydia and free app repository "3store" are offered). iCloud — which admittedly would pose a challenge to duplicate — has been replaced with Dropbox syncing. Finally, the implementation of "Newsstand" here is nothing more than a Whited00r news portal.
With a little bravery and a little determination, you can step into the future … even at a fraction of the cost.
[Source: The Verge]