How to Use TinyUmbrella to Save SHSH Blobs for iPhone, iPad before iOS 16/15/14 Update

Part 1: What is a SHSH Blob for iPhone, iPad?

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. (From Wikipedia)

To put it simply, An SHSH Blob is what Apple uses to verify the version of iOS you are running. That's why we tell you to save your SHSH Blobs before upgrading your iPhone, iPad. Otherwise you might not be able to downgrade to a previous version in the event you needed to. SHSH blobs are of three different types – Erase (Restore), OTA, and Update (Restore)

Part 2: Steps to Save SHSH Blobs for iPhone, iPad before iOS 10 Update

TinyUmbrella, a famous tool that can be used for saving SHSHs blobs and downgrading to older iOS versions, but also helps fix iPhone stuck in Recovery Mode. Follow steps below to save SHSH blobs for iPhone, iPad with TinyUmbrella.

Step 1: Download (Windows, Mac) and install TinyUmbrella on your computer.

Step 2: Open TinyUmbrella and plug your iPhone or iPad to that computer. TinyUmbrella will automatically detect your device.

Step 3: After your device has been recognized by TinyUmbrella, all the SHSH blobs available in your device will automatically be downloaded by the tool and saved automatically. All the blobs get saved in one single file at ~/.tu/.shsh.

Within 3 steps you can save the SHSH blobs for your iPhone, iPad. Remember that you will be able to downgrade using the blobs only when a downgrade method is available.