SHSH Blobs

Posted by nkbish0p at 17:56

Tweet Before reading any of this article, note this is only for people with newer hardware, specifically:

-iPhone 3gs or 4.

-iPod touch 3g.

-iPad.

If your model does not appear here, you do not need to read this. If you do not know what model of iPod touch you have, read

this guide.

When you want to restore one of these devices in iTunes, iTunes will only allow you to restore your device to the latest firmware for your device. If you back up your SHSH blobs as you go through each firmware, you will be able to restore your device to any of the firmwares that you have backed up your SHSH blobs for. This is important to people that wish to be able to keep their device jailbroken, or people that would like the freedom to downgrade their firmware.

Even if you don't update your device, if it crashes, you may need to restore in iTunes. If you have no SHSH blobs backed up, you can only restore to the newest firmware which may not be jailbreakable. If you want to restore to an old firmware that can be jailbroken, you will need the SHSH blobs for that firmware for your device.

In this article I will be explaining how you can back up your SHSH blobs. I would advise anyone with any of the above devices to do this, especially if you have an interest in jailbreaking.

First of all I recommend reading this README as it gives a more detailed explanation of what this post is all about.

Secondly, you will need to download tinyumbrella from the "quick links" section of this website for the operating system that you use.

To save your SHSH blobs simply do the following.

1. Connect your device to your computer and wait for it to be detected by iTunes.
2. Open tinyumbrella.
3. Click Save my SHSH.
4. You are done, disconnect your device.

To restore your iPhone to a firmware that is below the one you currently have (downgrade firmware):

Before you do anything else, download the firmware that you wish to restore to from here

1. Connect your device and wait for it to be detected by itunes.
2. Click your device on the left had side of iTunes.
3. Open firmware umbrella and click start TSS server.
4. Hold shift (if using windows) or alt (if using mac) and browse to the firmware you wish to downgrade to.
5. Click OK and your phone will restore.
6. If after the restore is completed, your device is left in recovery mode, click "kick device out of recovery" in tinyumbrella.
7. Turn your device off then back on again.
8. Your phone has been downgraded.

Remember, you can avoid doing all this by simply not upgrading your device until you are sure the firmware you are upgrading to can be jailbroken and will be stable on your device.