Everyone once reflash their device to a newer firmware. In most cases, new features add new features in firmware and correct bugs, but this is not always happening. Recently, after updates, some users begin to "fall off" Wi-Fi, a network or battery sits for a couple of hours. Apple releases iOS updates not so often, during this time you can widget to nourish with the problem that has appeared. In such cases, two options: wait for the update or roll back to the old IOS.

Officially roll back to the previous iOS in the data moment is impossible. Why and when Apple began to prohibit roll back to the previous version of iOS I will try to tell you.

The concept of SHSH (hash) appeared in 2009, together with the release of iPhone 3GS.

Shsh. - Digital signature, which is signed by the firmware file before it is written to the device. Hesh Shsh writes on a special Apple server (gs.apple.com) in response to the identifier of the device being selected sent to it iTunes.

ITunes interaction diagram with Apple servers:

Next, starting with iOS 3.1.1, the signing system was distributed to iPod Touch 2G and 3G, and from the moment IOS 4.0 SHSH, iPhone 3G also began to subscribe. In iPhone 2G, iPod Touch 1G and Apple TV 1G Shsh are not used, so the device data can always be flashing on any available IOS version.

Total control of firmware was able to bypass hackers. It turned out that SHSH with the Apple server can request not only iTunes, but also any other program. So it was possible to make a backup, and with this, in turn, roll back the firmware.

1. Programs that shake shsh on your PC
2. Programs that save hash on Cydia servers (in the cloud)

Both methods have their pros and cons. For example, programs that store your digital signature on Cydia servers are sometimes failures or due to hash servers overload simply cannot be preserved. But everyone has their own advantages! For example, saving on a PC, SHSH will always be available, regardless of the performance of Cydia servers or the availability of the Internet! Everyone chooses for himself what he likes, what is comfortable!

Let me introduce a number of some programs that you can save SHSH:

Cydia

When jailbreak to you, Cydia is immediately installed on the iOS - the tweak store. By the installation of those very tweaks, Cydia will automatically save your hash firmware! Saving occurs when the Internet is connected or Wi-Fi.

Saving occurs directly from your iOS device on the CYDIA server. It is shown above that on my iPod saved SHSH starting from iOS 3.3.3. Small trick if the hash is not automatically saved, just press the "RELOAD" button a couple of times.

The only disadvantage of this method of saving a digital signature is periodic overload by the server. For example, after the release of Evasi0N Cydia, it was not stable and Cydia servers were not before that.

Tinyumbrella is one of the most famous programs for saving SHSH from your PC, Mac. The main feature of this application is the ability to send your SHSH straight to the Cydia server so that in the future does not lose the saved certificates on your PC. Also, this program is often used for the dowgend of firmware. I will tell you about it in future articles!

ifaith (IH8SN0W Developer) is a unique program that allows you to save the hash from any iOS device running the old firmware version that does not have a digital Apple signature.

When Apple stops signing the old versions of the firmware, you do not have the ability to unload the hash, the iFaith utility allows you to make a shsh file dump for any version of iOS and thereby recover the IOS firmware you need!

Saving occurs on the PC in the place you specified, so Shsh will be available to you even when Internet connections you do not have, but there is a saving!

Using instructions will appear later.

That's all you need to know about rollback firmware, this page will be updated as new information appears !!

Previously, Hacker Tihmstar announced that he plans to release a new tool called "Prometheus", which will allow users to lower or increase more unspecified IOS versions.

He also released a new tool called TSSCECKER, which allows you to create and save the digital signature. SSH2, necessary for the Prometheus application, designed to conduct a procedure for lowering or enhancing the version of the IOS OS that no longer signs Apple.

By itself, the way to keep digital signatures.shsh was not entirely obvious to technically not savvy users. Fortunately, "1Conan", Reddit user, intervened and created an online tool called AUTO-TSSCECKER, which can save you from the need to perform terminal commands, and instead will automatically create and save for you. SSH2 signatures of the current version of iOS.

To use the online tool, you need an ECID and identifier of your iPhone, iPad or iPod Touch devices.

howdiscover ECID yourhis iPhonei.Pad or I.Pod Touch.

• Connect the iOS device to the computer.
• Select the "Overview" tab in the left pane.
• Press the serial number in the Overview tab until the ECID number appears.
• Right-click on the number and copy it to the clipboard.

Please note that you need hexadecimal ECID value. If you send the decimal ECID value, it will not save the correct digital signature. SSH2. You can visit this site to convert the decimal ECID value to hexadecimal.

How to get an identifieryour hisw.iPhone Streamsi.Pad or I.Pod Touch.

• You can check the identifier of your iOS device on this site.

How to preservealign.Shsh2. Signatures for iPhone,i.Pad or I.Pod Touch.

• Open the following link: https://tssssaver.1conan.com
• Insert the ECID number you copied above.
• Select the device type, i.e. iPhone, iPad or iPod Touch.
• Next, enter the identifier of your iOS device, for example: 9.1 for one of the iPhone 7 models.
• Click the "Submit" button.

And it's all. You will be presented with a result and will be issued a reference to the saved.shsh2 digital signature. In case you lose your link, you can download your digital signature.shsh2 by visiting the site: https://tsssaver.1conan.com/shsh/ (Please do not forget to convert hex ECID to decimal value at the beginning).

In this article you will find out what SHSH is and why save it?

SHSH certificate (ECID SHSH, SHSH BLOBS) - This is a unique digital signature that is checked on the Apple server when the firmware is restored via iTunes. If you update the firmware on your device, you will not be able to install more old firmware back, since SHSH is different for each new firmware.

Saving a SHSH certificate is first of all so that you have always had the opportunity to roll back to the oldest firmware.

Fashion first

Just run Cydia and it will automatically save SHSH to your server. And at the top of the screen, the list of SHSH of all stored firmware will appear. The disadvantage of this method is that you will not be able to install Cydia without making a jailbreak. Save Shsh better right away, because after the next firmware version, SHSH for the current version you can no longer be able to save.

Method of the second

The Tinyumbrella Jabreak does not need to save the SHSH. The advantage of this solution is also that Tinyumbrella saves SHSH not only on the Cydia server, but also on your computer.

Download the latest version for Mac or Windows

Step 1
Ensure that iTunes is installed on the computer. Connect your device to a computer via USB cord.

Step 2.
Run the Tinyumbrella program. In the left side of the window, in the "Connected Devices" section, the connected device will be displayed. Choose it.

Step 3.
Click on the "Save SHSH" button. The program will automatically download the current certificate from the Apple server, as well as all certificates saved on the Cydia server (if you saved them through Cydia).

As we wrote earlier, Hacker Tihmstar announced the release of a new utility Prometheus.which allows you to roll back on old, more unsigned by Apple version of iOS. To successfully use Prometheus, you will need saved digital signature files SHSH2 BLOBS. About how to save SHSH2 Blobs for iPhone, iPad or iPod touch on a computer running Windows told in this instruction.

Why keep SHSH2 BLOBS

Saving the SHSH2 Blobs of your device for currently current firmware (iOS 10.1.1 and iOS 10.2 on December 19, 2016), in the future, with the help of the Prometheus utility, you can easily return to the specified old version of iOS, even if Apple is already Will not sign. This will be especially useful if the means for jailbreak iOS 10.1.1 Still appear. With the saved SHSH2 Blobs, everyone will be able to return to iOS 10.1.1 and install the jailbreak on its mobile device.

Important! Previously saved SHSH BLOBS using Tinyumbrella utilities or SaveTheMblobs will not work with Prometheus.

Step 1. Connect the iPhone, iPad or iPod Touch to the computer, run iTunes and find out ECID and identifier model Your mobile device. To do this, click on the column " Serial number"Before the necessary paragraphs.

Note: If the offered iTunes ECID contains only the numbers, it must be recoded using this converter .

Step 2. Download the archive with the utility aUTO-TSSCECKER. And unpack it anywhere.

Step 3. Run the file Start.Bat. From the unpacked archive.

Step 4. Write or insert model Your device obtained from iTunes, for example, iPad4.1. Click ENTER.

Step 5. Write or insert ECID Your device obtained from iTunes, for example, 7F68B33F8D0. Click ENTER. Important! Make sure the ECID consists not only from the numbers.

Step 6. Check the correctness of the entered ECID and click Y..

Step 7. Enter finder namein which SHSH2 BLOBS devices will be saved and click ENTER.

Step 8. Enter the query request for a cache N. and press ENTER. The process of saving SHSH2 BLOBS will begin.

Ready! Shsh2 Blobs Your iPhone, iPad or iPod Touch will be saved in an organized order in the AUTO-TSSCECKER utility folder. Save them in a safe place, for example, in the cloud storage for subsequent use in order to return to the old firmware version.

We have already written what SHSH is and why they are needed. Basically, SHSH devices are needed to roll back the firmware on the earlier version of iOS. For example, if your device slows down on iOS 6, then you can safely return to iOS 5 or even iOS 4, because your device will work faster on them!

We made a rollback from iOS 6.1.3 to iOS 4.3.3 on the iPod Touch 4G device. iPod Touch worked noticeably better, because older iOS require fewer resources.

But what to get to the early version of IOS, you must need SHSH early firmware. As they say: "No shsh, no rollback"

We will show you some more convenient ways to download SHSH your device on PC!

Those who once did Jailbreak, probably heard of such a utility like Tinyumbrella. Tinyumbrella will save your shsh not only Cudia servers, but also on your PC.

It is desirable to use the most relevant version of Tinyumbrella. You can download the new version on the official website - ThefirmwareUBELLA.BlogSpot.ru

After you launched Tinyumbrella, plug your device.

You see that I have a device connected "IPod n1k0lay".Click on it and go to the tab " Advanced.Now you should ask a place where the shsh will be stored, it can be done in the line: " Save Shsh Directory.". Next, we note everything as well as shown in the picture.

• SAVE ALL AVAILABLE SHSH - Keep all available shsh
• Request Shsh From Cydia - SHSH request not only from your device, but also from Cydia servers
• WHEN CONNECTION A DEVICE NAME OVER THE NAME SET ON THE DEVICE PREFER MY CUSTOM DEVICE NAME OVER — Not the desired option, which shows his name as you yourself were asked. Just leave the feature included.

Let's go to the tab " Generel"And click on the button" Save Shsh.". The process takes a couple of seconds.

You see the process almost ended. In the window "SAVE SHSHS FOR% Devise Name%" You see saved certificates.

Also let's go to the place where we saved SHSH. There they are already there too!

You see all the certificates that are preserved.

- Unique utility, with a large set of functions. The program supports a large number of devices, as well as all iOS from iOS 3.1.x to iOS 6.1.3!

To save the milestone available SHSH for your device, select the "Show Availabl Shsh Cashes On Server" deposit.

We are offered to connect your device or choose it from the list and enter ECID. It is easiest to connect your device and continue.

After we have connected your device to a PC, ifaith connected to your servers, brought the list of available SHSH and suggested Save New.

You can choose the SHSH you need, and you can simply click on the button: "Download All Available Blobs" to download all certificates. Let's save all shsh by pressing the appropriate button. After pressing, we will be offered to choose the placement of certificates. After selecting the placement, the ShSH Blob boot will begin.

After some time, the process will end and the list of saved SHSH BLOB will be issued.

Click "OK", Saving SHSH BLOB with IFAITH ended!

Saved files have an extension .ifaith I.SHSH, since ifaith loads SHSH BLOB not only from Cydia servers, but also from their own!