Apple has released iOS 4.0.2 to fix the PDF exploit used by JailbreakMe 2.0 star, the ultimate jailbreak for all devices on iOS 4/ iOS 4.0.1 or iPad 3.2.1. Those of you who have upgraded to iOS 4.0.2 accidentally or had bought a new device which came with it, check our articles on how to jailbreak iOS 4.0.2 on iPhone 3G using Redsn0w 0.9.5b5-5 and jailbreak iOS 4.0.2 on iPhone 3GS using PwnageTool (unofficial).
If you are an iPhone 4 user, then you are left with no way to jailbreak and unlock iOS 4.0.2. Your only choice at this time is to downgrade iOS 4.0.2 to iOS 4.0.1 using your saved SHSH blobs. In case you are one of those who forgot to save your SHSH blobs or lost them, then here is some news for you. A guy by the name UndeadRevolution has posted a guide on PwnMyI Forum on how to downgrade iOS 4.0.2 to 4.0.1 without having your SHSH blobs saved.
