BlackRa1n and BlackSn0w for iPhone 3G(S)

BlackRa1n! Jailbreak for iPhone 3G and 3GS and with BlackSn0w the SIMunlock even for brand new iPhones with the latest 05.11.07 baseband. Enables tethering, too. Blacksn0w is also available on Cydia, (repo: blackra1n.com).