SnowBreeze / Sn0wbreeze 2.5 for iPhone running iOS 4.3.1 is out now and this means that those users can now easily jailbreak their phones. Folks at iPhone jailbreak guide have posted a step by step guide on their site to help you out in using those tools.
The iOS 4.3.1 fixes graphics issue that some of the users were facing on the iOS 4.3. It also resolves some of the bugs related to activating and connecting the mobile network. This update is available via iTunes now.