iPhone Dev Team has announced the release of Redsn0w 0.9.6rc11 for iOS 4.3.1 untethered jailbreak. This new updated version of Redsn0w comes with custom animated boot logo option for iPhone, iPod touch, and iPad. If you have already jailbroken your iOS Device on iOS 4.3.1 using Redsn0w 0.9.6rc9 then simply rerun Redsn0w 0.9.6rc11 over the existing jailbreak. You should note that you have to uncheck “Install Cydia” option to avoid package conflict with the existing jailbreak.
Instructions to jailbreak iOS 4.3.1 untethered using Redsn0w 0.9.6rc11 is similar to the instructions for jailbreaking iOS 4.3.1 untethered using Redsn0w 0.9.6rc9. You can download Redsn0w 0.9.6rc11 for your Mac and Windows from the links given below. After downloading Redsn0w 0.9.6rc11 simply follow the steps posted here to jailbreak iPhone 4, iPhone 3GS, iPod touch 4G, 3G, iPad on iOS 4.3.1.