iPhone security expert and hacker Stefan Esser has managed to jailbreak iOS 4.3 untethered. He has been working privately on it for a while, independently of all teams. Therefore his work is likely to be legit.
For those of you who don’t know, Stefan Esser is the same person who recently found a new method, called antid0te which promised to jailbreak iOS devices with all the enhanced security mechanisms in place so that the jailbroken iOS devices are secured as much, or even more than the non-jailbroken ones. This new method was said to use ASLR (Address Space Layout Randomization) which has been absent from all the current iOS devices up to iOS 4.2.1, making them vulnerable to attacks such as the ones demonstrated at Pwn2Own contest. But starting with iOS 4.3, Apple has implemented ASLR for all iOS devices.
There is no ETA on the release for this untethered jailbreak yet. As always, we will keep you updated ! Stay tuned for more.