Apple has just released iOS 4.0.2 update for iPhone which patches the PDF exploit that was used by JailbreakMe.com for jailbreaking iPhone 4. It’s been said that there is absolutely nothing new added in this minor iOS update other then the patch for the exploit. The update is simple and all you need to do is connect your iPhone to iTunes and wait for the popup (or click here to download iOS 4.0.2 directly).

ios_4_0_2

!!!Important!!!
If you have jailbroken your iPhone 4 using the recently released JailbreakMe tool then you definitely don’t want to upgrade to iOS 4.0.2 and the same applies for those who want to jailbreak since it will not be possible once you update. The safe way is to  save your SHSH blobs so that you can always restore your iPhone to iOS 4.0.1 but still we recommend you not to update just yet. (via MerryCode)