iPhone Dev team has once again updated the Redsn0w 0.9.6 tool. In previous update i.e. Redsn0w 0.9.6 RC10, they had included animated boot logo support for iOS 4.3.1 devices, which allows users to choose custom logo for the boot process.
Redsn0w 0.9.6 RC11 has now been released for jailbreakers and it makes the boot animation a bit more robust across all devices. It’s a small update for users, so you can still use Redsn0w 0.9.6 RC9 or Redsn0w 0.9.6 RC10 to get untethered jailbreak on iOS 4.3.1 firmware.
Direct download links of RC11 update can be found below. If you don’t know how to jailbreak iOS 4.3.1 with this tool, here’s a simple guide that will help you in the process.
Download Redsn0w 0.9.6 RC11 for iOS 4.3.1 Jailbreak
Mac | Windows
Update: Ultrasn0w 1.2.1 unlock for iOS 4.3.1 devices.