Problem is people had 3.0 or 3.01 before MMS was introduced (jailbroke people). Well, Apple made it so in order to get the carrier update, to enable MMS, you must update to 3.1 via iTunes and then it tells you there is carrier update. This is all good for non JBr's. Those that are jailbroke, you need to manually install the carrier file that enables MMS, the camera icon, etc. It's quick and very simple.