progrese Redsn0w Untethered iOS 4.2.1 Jailbreak Without 4.2b3 SHSH Imminent
What that means? Dev-team has added a new feature (Monte) to Redsn0w which allows you to untethered jailbreak without the need of iOS 4.2b3 SHSH blobs, you will need iOS 4.1 SHSH blobs. Monte is not an exploit, it's a technique based on using the iOS 4.1 exploit into iOS 4.2.1, so releasing it now before the official release for iOS 4.3 won't waste any exploits.So the dev-team may release it soon.