You have an iPhone on any version of IOS like 12.4 and you want to go back to a previous version like I OS 11.2 not signed by Apple, i...
You have an iPhone on any version of IOS like 12.4 and you want to go back to a previous version like IOS 11.2 not signed by Apple, it is possible thanks to a list of programs.
Very powerful choppers have found a way to demote an IOS device to an unsigned version by Apple; that is to say that can not be restored on iTunes.
What can the benefits of retrograde be?
1. Find your data on an old backup
2. Unblock iCloud from an old backup
3. Avoid some Bugs
Here is a step-by-step guide on how to restore to an unsigned iOS firmware like iOS 11.1.2, which can be jailbroken. This guide was written by Albanus Alain, one of our readers, who managed to restore his iPhone 6s on iOS 11.1.2, then on iOS 11.0.3.
After publishing an iOS software update, Apple usually stops signing the earlier version of iOS firmware after two weeks. Apple used this strategy to keep the jailbreakers at bay. It not only releases new software updates, which fix the vulnerabilities used by jailbreaks, but also stops signing the old iOS firmware file, which prevents users from returning to the old iOS version that can be jailbroken . Therefore, the ability to upgrade or demote an unsigned iOS firmware version can be very useful if you want to jailbreak your iPhone, iPad, or iPod touch. So you can restore (basically upgrade or demote) iOS 11.1.2, which can be jailbroken using Electra jailbreak or LiberiOS using this method.
Warning:
This tutorial is not designed for the shy and you may fail and you have to restore the latest version of IOS, losing your chance to jailbreak. Please proceed with caution and at your own risk. Read this tutorial carefully and again until you understand these steps. Unsigned iOS upgrade or demotion can only be performed if you have the correct SHSH blobs for your iOS target version and the iOS Public Beta Signing Window is still open, regardless of the location. iOS released and signed in progress. For this tutorial, I use the model iPhone 6s and I will refer to iOS 12.3.1 because this version does not present the terrible bug of the gyroscope present in iOS 11.1.x. To increase your chances of success, you must have already jailbroken your iOS device and have 10 GB of free space on the hard drive.
requirements:
Back up your iOS device. This process will erase everything on your device.
As mentioned earlier, for this process, you need SHSH2 blobs for the iOS version you want to demote. So, if you want to restore to iOS 12.3.1, you will need the iOS 12.3.1 SHSH2 blob. If you have multiple .shsh2 files, you must choose one in the "noapnonce" folder, which should be named "1234567890123_iPhone5,5_n51ap_12.3.1-15A432_a1bcdef234abc567d8e9f012345a6789b01234c5.shsh". You can save SHSH blobs for an iOS version only if Apple still signs the firmware. If you have saved the SHSH2 blobs but that
you have lost the link, you can read our article on
THE WAY to save SHSH2 blobsfor download
For iOS 9.3.4 or 9.3.5, load inPhoenixNonce.ipa from https://github.com/Siguza/PhoenixNonce/releases
For iOS 10+, nonceSet1112.ipa sideloaded from
https://github.com/julioverne/NonceSet112
Download the latest signed .ipsw iOS file (at the time of writing, iOS 12.3.1) for your iOS device model from here:
Upload your target iOS .ipsw file for your iOS device model (for example, iOS 11.1.2)
Download the latest iRestore file Download iRestore
How to upgrade or downgrade unsigned iOS firmware with
futurerestore or iRestore
Step 1: Extract the downloaded "futurerestore.zip" file to a folder on your hard drive named futurerestore (for example, C: \ futurerestore \) and copy your target iOS .shsh2 blob to it. Also copy the two iOS .ipsw files to this folder. To make it easier to enter the command line later, you can rename the .shsh2 file as "my.shsh2", the iOS 11.2.1 .ipsw file as "restoreto.ipsw", and the iOS 12.3.1 .ipsw file as " sign". ipsw ".
Step 2: Open your .shsh2 file as text using Notepad and look for the keychain of your generator, something like 0xab12c34d5ef6ab7d,
then type this string in the PhoenixNonce or NonceSet1112 app added to Set or Enter. In this process, your device may restart itself - this is normal. Restart your iOS device, and then open the app again to make sure that the value has been correctly written to your device. If the value has not been displayed yet, repeat this process. Sometimes the value has been correctly written but the application shows nothing. You can repeat and continue with the following steps.
Step 3: Connect your iOS device to your Windows PC, make sure iTunes is not running in the background and you have a good internet connection. Open the command prompt, then go to "C: \ futurerestore \". Assuming all files are in the same folder, type the following command:
futurerestore -t my.shsh2 -i signed. ipsw restoreto.ipsw
if you have not changed the filenames, the command may look like something.
You will see a long commented message after pressing Enter. Do not stop this process until it is finished.
In this process, futurerestore may not be able to put your iOS device in a state of recovery. You may need to put your device to your own recovery. Be aware that each time the device exits recovery before the end of the process, the generator key is reset and you must repeat steps 1 through 3.
You can quit recovery by using the following command:
futurerestore.exe -exit-recovery
Wait and hope nothing goes wrong during the process.
That's all. This process should have helped you successfully restore unsigned iOS firmware. You can then restore from the backup during the installation process.
Video Tutorial
If you have difficulties to follow the written tutorial you can always use this video to follow the steps described.
Step 2: Open your .shsh2 file as text using Notepad and look for the keychain of your generator, something like 0xab12c34d5ef6ab7d,
then type this string in the PhoenixNonce or NonceSet1112 app added to Set or Enter. In this process, your device may restart itself - this is normal. Restart your iOS device, and then open the app again to make sure that the value has been correctly written to your device. If the value has not been displayed yet, repeat this process. Sometimes the value has been correctly written but the application shows nothing. You can repeat and continue with the following steps.
Step 3: Connect your iOS device to your Windows PC, make sure iTunes is not running in the background and you have a good internet connection. Open the command prompt, then go to "C: \ futurerestore \". Assuming all files are in the same folder, type the following command:
futurerestore -t my.shsh2 -i signed. ipsw restoreto.ipsw
if you have not changed the filenames, the command may look like something.
You will see a long commented message after pressing Enter. Do not stop this process until it is finished.
In this process, futurerestore may not be able to put your iOS device in a state of recovery. You may need to put your device to your own recovery. Be aware that each time the device exits recovery before the end of the process, the generator key is reset and you must repeat steps 1 through 3.
You can quit recovery by using the following command:
futurerestore.exe -exit-recovery
Wait and hope nothing goes wrong during the process.
That's all. This process should have helped you successfully restore unsigned iOS firmware. You can then restore from the backup during the installation process.
Video Tutorial
If you have difficulties to follow the written tutorial you can always use this video to follow the steps described.
Good if you have difficulties you can write a comment on this page.
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