This had been so long people wanted to jailbreaked their iPhone 3GS 3.1.3 ( new bootroom 05.12.01 ) and finally it arrived to us. Although this jailbreak iPhone 3GS 3.1.3 tutorial is a bit late (because the official announcement have been released a week ago) but it will be very useful for you who want [...]

Only one way to jailbreak iPhone 3.1.3 is using Pwnage 3.1.5 that was released by The Dev Team. This tutorial will use that tool as primer software. Unfortunately, it is available just for Mac only, the Windows version is still under development (may be).