With speculation that Pangu might be releasing an iOS 10.3.1 jailbreak soon, this is a good time to save your device’s SHSH2 blobs.
Saving these SHSH2 blobs will make it possible for you to upgrade or downgrade to an iOS version even if it isn’t being signed by Apple. If you want to get specific with the details of an SHSH blob, you can read about it below.
In this guide, we will show you 3 different methods for saving your SHSH2 blobs.
What are SHSH Blobs?
Let Wikipedia explain the basic term:
SHSH blob is a term for a small piece of data that is part of Apple’s digital signature protocol for iOS restores and updates, designed to control the iOS versions that users can install on their iOS devices (iPhones, iPads, iPod touches, and Apple TVs), generally only allowing the newest iOS version to be installable.
Developers interested in iOS jailbreaking have made tools for working around this signature system in order to install jailbreakable older iOS versions that are no longer being signed by Apple.
And then, let’s let The iPhone Wiki explain more of the nitty gritty details:
Technically, the SHSH of a firmware image is a 1024-bit (0x80 bytes) RSA signature. This often also refers to backup files with the signature (“SHSH blobs”).
This signature is needed to restore a specific iOS version; it is generated by Apple based on hardware keys of the device and the hash of the firmware. Apple only issues signatures for the currently-available iOS version, which disallows installing older iOS versions.
But if you have saved signatures for an older iOS version, you may be able to use a replay attack to restore that version. Therefore it is recommended to save the signature for your device as long as Apple issues it.
How Do I Save my SHSH Blobs?
Method 1: Tihmstar’s TSSChecker (Mac only)
- Download TSSChecker
- Connect your iPhone, iPad or iPod Touch to your computer and launch iTunes
- Follow the video below
Method 2: Telegram (Easiest – No Computer Required)
- Download the Telegram app on your iPhone, iPad or iPod Touch
- Add the jailbreak bot by using this link
- In the telegram chat, type in /shsh. You will then get a reply from the bot asking you the model of your device
- Enter the information asked by the bot
- You will need to enter your device’s ECID. If your device is jailbroken, you can use UDID calculator app from Cydia. If not jailbroken, hook your device up to the computer, connect to iTunes and click Serial Number twice on the Summary page
- Enter the ECID and wait. The bot will then send you the SHSH2 file
- Save this in iCloud Drive or somewhere safe
Method 3: Online – Computer Required)
- Connect your iPhone, iPad or iPod Touch to your computer and launch iTunes
- On iTunes choose your device from the top left button
- Once on the device’s summary page, click on the serial number until you get to the ECID of your device. Right click and copy that number
- Enter the information required on this website
- Once the information has been entered correctly, click Submit & then click the link that appears on the next page
- Click on the Download ZIP button and save the file on your computer
That’s it! Now you know how to save your SHSH2 Blobs!
Keep in mind that the blobs are specific to your device, meaning that you can’t use anybody else’s blobs even if they have the same exact device as you.
Also note that you can’t currently use the blobs for downgrading or updating to 10.3.1. When that time comes, expect an article to be posted!