Learn How To Save Your SHSH Blobs With TinyUmbrella Now that you know a little bit more about SHSH blobs we will get right down into learning how to save your SHSH blobs. Thus, saving your SHSH blobs is the only way to trick this security system put in place by Apple (Thanks iPadForums). You see, each time you try and restore or update your iDevice SHSH blobs are compared to one-another to verify that you are not trying to downgrade your iDevice’s firmware. Meaning, in not so technical terms, SHSH blobs are the magic key to restoring or updating your iDevice. Each individual signature created is termed a SHSH blob, or blob for short. SHSH stands for Signature HaSH and it is a 128-byte RSA signature (a random string of numbers and letters), used in this case by Apple as a technique to verify if your iDevice can be restored or updated. What are SHSH Blobs and What Do They Stand For? Having the ability to downgrade your iDevice’s firmware is useful for a number of reasons the most important reason being if you accidentally upgrade to a firmware version that cannot be Jailbroken. Where if you did not save your SHSH blobs on the iOS 4.3.3 firmware you could not of downgraded back from the iOS 4.3.4 firmware to the iOS 4.3.3 firmware. You could easily downgrade back to the iOS 4.3.3 firmware. Meaning if you saved your SHSH blobs for iOS 4.3.3, but accidentally update to the iOS 4.3.4 firmware. Saving your SHSH blobs allows you to restore your iDevice to a lower firmware versions you are currently running.
So, without further hesitation let’s get into a couple frequently asked questions and then we will get right down to business. Saving your SHSH blobs is not necessarily a complicated process, but with many new Jailbreakers joining the Jailbreaking Community everyday I thought it may be a good idea to write a generalized guide for saving your SHSH blobs with TinyUmbrella (I plan on doing a tutorial for iFath in the near future as well).
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