George Hotz (Geohot) has released the newest update of his jailbreaking tool blackra1n, version RC3. In addition, he has made public a true carrier unlock for the latest firmware iPhone OS 3.1.2 and baseband 05.11.07.
Geohot's blackra1n RC3 software jailbreaks any iPhone running 3.1 or later in seconds on both Mac and Windows platforms. A reboot is all that's needed.
Voice over Internet Protocol (VoIP) calls using applications such as Truphone and Fring are nothing new to the iPhone. VoIP calls using 3G, or EDGE/GPRS for that matter, have been available for three months now, and it's the jailbreak app VoIPover3G that makes them possible.
The app works by using a MobileSubstrate library that tricks applications into behaving as if they are on a Wi-Fi connection when they are actually on a cellular data connection. Fring and Truphone are tricked by default when VoIPover3G is installed using the Cydia package manager.
Firmware update 2.2.1 (5H11a) for iPhone and iPod Touch is now available from Apple via iTunes. Besides some bug fixes, 2.2.1 also includes a baseband update, which brings the modem firmware to version 02.30.03. The iPhone Dev-Team immediately suggested that users with jailbroken and/or unlocked devices wait for further instructions while they continue to inspect the update.
