Word is the iPhone Dev Team have now released PwnageTool 3.1.4 for Mac OS X which supports the 3.1.2 iPhone software on the iPhone 2G, iPhone 3G, iPhone 3GS, iPod Touch 1G and iPod Touch 2G reports the iphone blog.
The new release allows the baseband to remain unlocked at 3.1.2 however id doesn’t unlock a new baseband put in place by restoring to the official 3.1.x.
For those who need to unlock the iPhone it is important to understand they can keep it only by beginning at 3.0 or earlier and updating to ISPWs which do not update the baseband.