Before Jailbreaking, Extract iPhone's SHSH Blobs Using Umbrella [How To]

If you're going to jailbreak your iPhone or iPad, the first thing you MUST do is backup your device's SHSH blobs.
With the release of iPhone 3GS and iPod Touch G3, Apple added an extra layer of security to prevent hacking, jailbreaking and unlocking. Apple is constantly closing the exploits used by jailbreak hackers by updating the [...:]