The ih8sn0w.com already launched Sn0wbreeze 3.1.3 V1.4 about 2 days after they released Sn0wBreeze 3.1.3 v1.3. This newest version, can be used to jailbreak iPod touch 1G also to jailbreak iPhone 2G, 3G, 3GS (but for bootrom and non-MC ONLY!) that are running on iPhone 3.1.3 firmware, but so far, Snowbreeze is not supporting iPod touch 2G & 3G

Snowbreeze is another Jailbreaking tool, just like Blackra1n, PwnageTool and Redsn0w, which also be able to create custom .ipsw files, the unique character of this tool is it fully supports Windows OS (Windws XP, Vista and 7)

Remember that this tool should be used ONLY to jailbreak iPhone 3GS that old bootrom and non-MC, this note for 3GS user,:)

Here is the tutorial on How To Jailbreak iPhone 3.1.2 On Windows Using Sn0wbreeze and after your iPhone 3G and 3Gs is jailbroken you are able to Unlock iPhone 3.1.3 For 3G 3GS Using Ultrasn0w for baseband 04.26.08 and Use Blacksn0w To Unlock iPhone 3.1.3 3G 3GS for baseband 05.11.07

Download Sn0wBreeze 3.1.3 v1.4

• Download iPhone OS 3.1.3 firmware for iPhone

• Download .NET Framework 3.5 (Must be downloaded to run Sn0wbreeze)
• Download Sn0wbreeze for Windows | Mirror

Hope it helps!