updated 10:25 am EDT, Fri June 26, 2009
Dev Team on iPhone 3G S
The iPhone 3G S should be relatively easy to jailbreak and unlock, the unofficial iPhone Dev Team suggests. The group says it has discovered that the "24Kpwn" exploit, originally used to hack the second-generation iPod touch, remains usable on the bootrom of the iPhone 3G S. As a result, a variant of the current redsn0w utility should become practical for future iPhone jailbreaking.
A variety of changes to the bootrom must be overcome before a 3G S jailbreak can be released. The Dev Team further comments that once a jailbreaking tool becomes available for the 3G S, the ultrasn0w unlock should work perfectly, without any further modification. The only caution is that when Apple releases future firmware updates, iPhone owners must initially refuse to install them, as they will overwrite ultrasn0w baseband changes. Appropriate ultrasn0w updates should become available over time.