"So, currently (when released) PwnageTool 2.0 will support:-
iPhone (1st Gen) with 2.0 - Activated, Unlocked & Jailbroken, (with support for third party applications).
iPod Touch with 2.0 - Activated & Jailbroken, (with support for third party applications).
iPhone (3G) with 2.0 - Activated, Jailbroken (with support for third party applications).
We’ve made some progress on the baseband unlock of the 3G device, but at this point PwnageTool will not support 3G unlocking or BootNeuter on the 3G device. It is, of course supported on the first generation device with 2.0. We’ll push out an update with 3G support if and when it is completed.
Quer dizer, a não ser que avançaram muito nos últimos dias, o iPhone 3G NÃO poderá ser desbloqueado por software, apenas será possível a activação e instalação de software de terceiros, ao contrário do que diz o TeK Sapo http://tek.sapo.pt/4N0/828158.html.