IPhone OS 3.0.1 Software Update now available to download for iphone users Via  iTunes, the updates intended to fixes SMS vulnerability, SMS-based security hole which discovered by Charlie Miller. iPhone OS 3.0.1 compatible for Iphone, Iphone 3G and 3GS

Update from Tom Neumayr (Apple)

We appreciate the information provided to us about SMS vulnerabilities which affect several mobile phone platforms. This morning, less than 24 hours after a demonstration of this exploit, we’ve issued a free software update that eliminates the vulnerability from the iPhone. Contrary to what’s been reported, no one has been able to take control of the iPhone to gain access to personal information using this exploit.