Yet another update to Sn0wbreeze has been released. This new update version 3.1.3 V1.5.2 brings fix for 64-bit users who were earlier having problems using this software with their iPhone on 64-bit Windows machines. Also added in this version is more speed and reliability, and the package has now been reduced to just 18mb in size. Unfortunately though, Blacksn0w unlock for iPhone 3GS is still crippled in this version, but you can follow the fix posted here for blacksn0w to unlock 05.11.07 baseband on this latest firmware. If you have iPhone 2G, 3G, 3GS or iPhone touch 1G/2G, you can use sn0wbreeze to jailbreak iPhone OS 3.1.3.