A few days back, well-known hacker and security researcher Luca Todesco announced that he will work on an iOS 10.1.1 jailbreak based on a kernel and root exploit published by Ian Beer from Google’s Project Zero.
We have some more good news for jailbreakers, iOS hacker tihmstar has announced that he will be releasing Prometheus, a tool that will allow jailbreakers to downgrade or upgrade to an iOS firmware version even when Apple stops signing it.
Apple has been using a two-pronged strategy to stay ahead of the cat and mouse game with jailbreakers. It has been releasing software updates to patch security vulnerabilities that could be used for a jailbreak like they did in iOS 10.2, and they also stop signing the firmware files of older iOS versions, to ensure that jailbreakers cannot downgrade back to an iOS version that can be jailbroken. So a tool to downgrade or upgrade to an iOS version that Apple has stopped signing would be quite groundbreaking.
More advanced features, including SHSH backup, baseband upgrade/downgrade and etc. IPhone Helper offers a lot of features for iOS users including Migrate Data that can help migrate iPhone's data from one iDevice to another iDevice very fast, 3uTools Backup can back up almost all the data and settings in your iDevice, search and delete useless. Jan 28, 2019 In this tutorial we will show you step by step, how to easily downgrade ios 12.1.3 using a free application called 3uTools. 3uTools is a free application full of features, easily accessible to you in order to mange your iOS device better than iTunes. Keep in mind that the 3uTools application is only available for Windows computers.
To use the Prometheus tool, you first need to save the SHSH blobs. tihmstar has released a new tool called tsschecker, which saves them in a new format called .shsh2. You can download it from this github link, and use this guide to save the .shsh2 blobs. We will also publish a step-by-step guide shortly.
Update: Auto-tsschecker: The Easiest Method to Save .SHSH2 blobs for Prometheus to Downgrade to Unsigned iOS Firmware Version
The tsschecher is currently available only for 64-bit iOS devices. You will also need a jailbroken device to use Prometheus to downgrade or upgrade to an unsigned iOS firmware. The jailbreak also must have “tfp0” functionality, though “host_get_special_port” workaround would be fine. So a device jailbroken using Pangu 9.1 would be eligible. Tudesco’s web-based Pangu 9.3.3 jailbreak loader also enables it.
tihmstar has also released a teaser video which shows the tool in action:
tihmstar has announced that he will release the Prometheus tool on New Year’s eve. If you’ve a jailbroken device, and have been wondering if you should upgrade to iOS 10.1.1 to prepare for the iOS 10.1.1 jailbreak from Todesco thentihmstar’s tool gives you the solution to stay where you are without worrying about Apple closing the signing window for iOS 10.1.1. You can upgrade to iOS 10.1.1 only when the jailbreak is released. However, it is important that you save the .shsh2 blobs as soon as possible before Apple stops signing iOS 10.1.1 firmware file.
Update:
A reddit user has stepped up and created an online tool called auto-tsschecker that will save you the trouble of executing the commands and instead will automatically save the .shsh2 blobs for you for the currently signed versions. Check our post for more details:
➤ Auto-tsschecker: The Easiest Method to Save .SHSH2 blobs for Prometheus to Downgrade to Unsigned iOS Firmware Version
As always, we’ll let you know as soon as there are more updates. Don’t forget to join our Facebook Fan page, follow us on Twitter, add us to your circles on Google+, subscribe to our RSS feed or our Daily Newsletter for the latest jailbreak news.
Are you excited about the possibility of downgrading or upgrading to an unsigned iOS version? Let us know in the comments below.
How to Downgrade 64-bit iDevice to iOS 12.0-12.1.2 with SHSH2 Using 3uTools
![Iphone 3utools Downgrade Iphone 3utools Downgrade](https://www.3u.com//upload/20171215/1513323384352003120.png)
Restore or Downgrade iOS12.0 – 12.1.2 with 3utools
A new version is out and 3uTools finally released with the long-awaited downgrading feature, downgrade 64-bit iDevices with SHSH2. This tutorial will guide you how to downgrade step by step.
Important Notes:
Iphone 3utools Downgrade Software
![Iphone 3utools Downgrade Iphone 3utools Downgrade](https://www.3u.com/upload/20161227/1482818519643023244.jpg)
1. This feature is only available on iOS 11 to 12.1.2 iDevices.
2. The downgrading operation will not save any data, please back up your device in advance.
3. There are risks to downgrade with SHSH2, so this downgrading feature is recommended for experienced users.
Compatible iDevices
iPhone
- iPhone X
- iPhone 8/ 8 Plus
- iPhone 7/7 Plus
- iPhone 6s/6s Plus
- iPhone SE
iPad
- iPad 12.9-inch iPad pro 2nd generation
- iPad 12.9-inch iPad pro 1st generation
- 10.5-inch iPad pro
- 9.7-inch iPad Pro
- iPad 6th generation
- iPad 5th generation
- iPad Air 2
iPod
- iPod touch 6th generation
Pre-Requisites:
1. Download the SHSH2 (of the iOS version you want to downgrade) you saved before on 3uTools or another tool.
2. Download NonceReboot12XX ipa file.
3. Download the iOS firmware you want to downgrade on https://ipsw.me
- If you saved SHSH2 file saved on 3uTools server:
If you never uninstall 3uTools, you could find the SHSH2 files in 3uTools’ cache folder.
Right-click 3uTools icon → click “Open file location”, and open “cache” folder, scroll down to find the right SHSH2 files of iOS version you want to downgrade.
3utools Iphone 4 Downgrade
- If you saved SHSH2 file saved on Tsssaver server:
Please go to its website to download the SHSH2 of iOS version you want to downgrade. And opennoapnonce folder to get the SHSH2 file.
Set generator nonce with NonceReboot12XX ipa
Step 1 Install ipa with latest version of Cydia Impactor. Go to Settings > General > Device Management, and open the just installed profile, and trust the developer.
Step 2 Enable Airplane mode on your iDevice, close Siri and reboot your iDevice.
Step 3 Open shshe2 file using any text viewer (eg. notepad)
Step 4 Search for <key>generator</key> and look beside it for actual key (eg. <string>0XXXXXXYYYYYYY</string>.
Step 5 Tap NonceReboot12XX on your device, and enter the above key code, and tap return to start set generator.
Iphone 3utools Downgrade Version
Step 6 Rename the SHSH2 file to .shsh from .plist.
Downgrade with SHSH2 using 3uTools
Step 1 Connect your iDevice to 3uTools and go to Flash & JB → Advanced, and click Download 64-bit iDevice.
Step 2 Read the popup carefully and click Select IPSW → Select SHSH, and double check the generator nonce you just entered.
Step 3 Select SHSH2 file, double check the generator nonce you just entered and click “Yes” to start downgrading.
Step 4 Confirm the connection between iDevice and PC, patiently wait for 20 to 40 minutes. Your iDevice will be restored to unsigned iOS 12.0 – 12.1.2 then.