Semaphone has recently rolled out a beta version of his popular TinyUmbrella tool for OS X and Windows. The tool, which helps downgrading to previous iOS version, has been completely rewritten and requires Java.
This release is quite significant for the jailbreak community. Using the TinyUmbrella beta you can save your SHSH blobs for your iPhone, iPad or iPod touch models.
Check out the following guide if to learn how to save SHSH blobs for your iOS device.
How to install TinyUmbrella beta
You should install iTunes on your system to use Tiny Umbrella
Step-1: Download the TinyUmbrella for your system. If you are a Mac user, mount the Volume and drag TinyUmbrella.app to your Application folder
Step-2: As TinyUmbrella requires Java, ensure that JRE 8.0 is installed on your machine. Click here to download the latest version of Java.
How to save SHSH blobs with TinyUmbrela beta
Step-1: Launch TinyUmbrella
Step-2: Connect you iOS device to the PC using USB cable. TinyUmbrella should automatically recognise it and start downloading the SHSH blobs for the firmware Apple is currently signing
You might force TinyUmbrella to pull an OTA SHSH blob by clicking the Fetch OTA button.
Note: TinyUmbrella will try to fetch all signed blobs on each startup.
Where to find blobs on the computer
The SHSH blobs are saved here; ~/.tu/.shsh
Types of SHSH blobs
There are three types of SHSH blobs you will find in TinyUmbrella beta which include
- Update (Restore)
- Erase (Restore)
Each of these blobs is identified by the Type column in the list of blobs.
Why blobs did not download
TinyUmbrella can only download blobs for the firmware which Apple is currently signing. If your iOS device is on firmware such as iOS 8.1.2, TinyUmbrella will not download the iOS 8.1.2 blobs as Apple has blocked the window for this firmware.
How to clear TinyUmbrella history
Tiny Umbrella keeps a log of devices that are connected to your PC while the application is running. This in turn allows to pin Apple servers and download SHSH blobs without connecting a device to the PC. You can delete the history of devices that you have connected by navigating to the following location.
Downgrade not possible
As confirmed by Semaphore, the developer of TinyUmbrella, the tool will not be able to downgrade but you can save SHSH blobs for the firmware you wish to.