Description: the iPhone Dev Team's tool to generate an activation plist file given a private RSA key. This plist can be used to activate existing AT&T and Cingular SIM cards (without signing a new contract).
If you don't know how to break the jail, how to get your DeviceID,
IMEI and ICCID, or even what to do with this "activation record",
you shouldn't probably use this tool in the first place.