iH8sn0w has released the updated version of Sn0wbreeze V1.5.2 that fixes some minor issues and bugs for 64-bit Windows PC users while jailbreaking their iPhone 3.1.3. The updated jailbreaking package tool is much more fast and reliable with just 18MB in size.
Sn0wbreeze v1.5.2 is a jailbreaking tool like PwnageTool for iPhone and iPod touch which can be used to create custom .ipsw files. But unlike the PwnageTool, Sn0wbreeze is fully compatible to work with Windows machines. If you have iPhone 2G, 3G, 3GS or iPhone touch 1G/2G, you can use sn0wbreeze to jailbreak iPhone OS 3.1.3.
Download Sn0wbreeze V1.5.2 to Jailbreak iPhone firmware 3.1.3
Download the iPhone OS 3.1.3 firmware for iPhone
Download .NET Framework 3.5 (required to run Sn0wbreeze)
Download Sn0wbreeze for Windows [Mirror Link]