The latest and greatest jailbreak tool has been released and it supports iPhone OS 3.1 on the 3GS hardware. Before you get too excited, keep in mind it will only work if you've already jailbroken your iPhone 3GS when it was running 3.0 or 3.0.1 firmware.
iPhoneland team developed a new software to unlock iPhone 3G/2G/3.1.3. This is based on the actual unlock iPhone 3G/2G/3.1.3 softwares. This new unlock iPhone 2G/3G/3.1.3 software is BlueRa1n.
New Unlock iPhone 3G 4.0 Beta using Redsn0w and Fuzzyband, Unlock iPhone 3G downgrade modem baseband 05.13.03 to 04.26.08 and unlock using ultrasn0w. The New Unlock iPhone 3G is really easy to use and accessible to novice users. The easy way to Unlock iPhone 3G is now available.