See this link regarding future unlock for firmware 3.1.3
Spirit Untethered Jailbreak for iPhone 3.2 | Redmond Pie
We saw a video a few days back in which Geohot performed an
untethered jailbreak for iPhone 3.1.3. This will most probably also work on the
iPhone 3.2 [COLOR=#0000ff !important][COLOR=#0000ff !important]firmware[/COLOR][/COLOR] for
iPad. In the meanwhile, another iPhone hacker by the name of comex released another video, which showed off untethered userland (browser based) jailbreak for iPhone, iPod touch and iPad. This new
userland jailbreak of iPhone 3.1.3 by comex has now been given a name – say hello to “Spirit”, an untethered userland jailbreak for iPhone.