Apple recently released iOS 4.0.2 to patch an exploit used by Jailbreakme.com to jailbreak iPhone, iPod Touch and iPad devices. However, the dev team has been silent on a jailbreak or unlock for the latest iOS, until today.
Earlier today, the dev team officially announced that they will not be working on a jailbreak or unlock for iOS 4.0.2 and will instead focus on doing the same for iOS 4.1. Jailbreaks for iOS 4.1 beta is already available and there are several ways in which you can jailbreak you device.
The reason given by the dev team seems pretty reasonable:
Now it’s a few weeks later, and Apple has closed the jailbreakme.com hole. They’re shipping devices with FW 4.0.2/3.2.2, impervious to this particular jailbreak. So now, people will begin to ask: will there be a jailbreak for devices that shipped with 4.0.2/3.2.2, out of the box?
No, there won’t be. FW 4.0.2/3.2.2 was *only* released to fix the jailbreakme hole. With FW 4.1 still in its beta stages, it makes no sense to escalate the cat & mousewith Apple for FW updates that only fix the jailbreak holes. To quote WOPR, the only winning move is not to play.
So this means that if you have upgraded to iOS 4.0.2, you will have to wait till iOS 4.1 is released in order to be able to jailbreak and unlock your iDevice. However, if you had backed up your SHSH blobs, you can restore/downgrade iOS 4.0.2 to an earlier version.