Apple released the iOS 4.3.1 a couple of days ago, to address battery life issues and graphical glitches with iPod Touch.
Now, within a day of its release, iOS 4.3.1 has been jailbroken by DjayB6. Sadly, the jailbreak is a tethered’ one at the moment. This means iTouch device owners will need to jailbreak their device, every time they reboot it.
As of now, the iOS 4.3.1 tethered’ jailbreak will only work for the iPhone 3GS, iPhone 4, iPod Touch 3G/4G, Apple TV 2G and iPad.
Owners of the latest generation Apple’s tablet, iPad 2, will have to wait for some more time before a jailbreak comes out for their device. Until then, they are recommended not to update their iOS version to 4.3.1.
Also, iPhone 3GS and iPhone 4 owners who have unlocked their handset using Ultrasn0w are recommended not to update to iOS 4.3.1. If they do so, their baseband version will be upgraded and they will lose the network unlock. The tethered’ jailbreak is only available for Mac OS X based PCs.
Hopefully, a Windows version will be released soon. The steps to jailbreak your iTouch device running iOS 4.3.1 can be found here.