Jailbreaking iOS 4.2.1 gets easier with the updated Sn0wbreeze 2.2 tool. The all new Sn0wbreeze 2.2 for Windows is available to smoothen the process of creating custom iOS 4.2.1 IPSW firmware.
To achieve untethered iOS 4.2.1 firmware jailbreak, the updated sn0wbreeze 2.2 exploits the kernel vulnerability along with the limera1n’s bootrom exploit. During the process of upgrading to iOS 4.2.1 firmware, Sn0breeze 2.2 has “Baseband Preservation Mode,” which preserves the baseband of the device. This will be helpful to later restore your iPhone without having to update its baseband.
On the other hand, while the custom IPSW firmware is taking its shape, you can kill your time by playing the Pacmac game. Maybe pointless to some, but it sure is fun to play. Also included in the new version of Sn0wbreeze for Windows is the “custom boot logo” option to install custom logos when the device boots up — replacing the white Apple logo.
Sn0wbreeze 2.2 For Windows Supports: