SHSH Blobs are an integral part of jailbreaking. A recent update suggests that all modern devices have invalid APTickets and hence can’t upgrade or downgrade to unsigned versions.
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Modern devices don’t have valid Blobs
All SHSH Blobs for iOS 11 firmware are invalid on modern devices. This holds true for all versions of iOS 11 such as 11.1.2 or even 11.2.1.
As you know, there are plenty of tools that can save SHSH Blobs for your device. Generally, you can switch to another tool in case one tool is defunct or not working as expected.
However, all SHSH Blobs are invalid for iOS 11 no matter which tool you used. The reason behind this is that the tools are not updated properly for the nonce present in these devices.
iPhone 8/8+ and iPhone X contain a nonce that is far greater in size than that of iPhone 7/7+.
The developers didn’t know that and their tools continued saving APTickets with shorter nonces.
If you own any of the following devices, you can’t use SHSH blobs for restore –
- iPhone 8
- iPhone 8 plus
- iPhone X
- iPad Pro 10.5-inch
- iPad Pro 12.9-inch (2nd generation)
How can this prove dangerous in the future?
You can’t use these blobs to downgrade or upgrade just in case something goes wrong.
Consequently, you will be forced to update your device to the latest signed version and lose your jailbreak.
I highly recommend not to install anything on your device until I give you all the clear.
Thankfully, all other devices such as those that use the Apple A10 Fusion chipset and below are just fine.
This means if you own an iPhone 7/7+ or below devices, you are in the clear.
How can I save valid SHSH Blobs?
There’s nothing to worry about as the developers will update their respective tools very soon.
This happened last year as well because iPhone 7 and iPhone 7 plus were just released and tools were not ready for them.
The most popular online tool TSS Saver will get an update today. The Telegram jailbreak bot is already functional and you can already save valid APTickets with it.
I suggest saving the blobs for iOS 11.2 and 11.2.1 while you still can.
Do you own any of the aforementioned devices? If yes, leave a comment below and I will suggest you the best course of action.
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