If you own an older iPhone or iPad, you might be interested in a new downgrade and jailbreak utility. blobless based on the checkm8 exploit. Called Semaphorin, it has just received a third version which brings much broader compatibility than initially.

What is Semaphorin?

Signed by developer y08wilm, Semaphorin is a tethered downgrade and jailbreak tool (you have to re-jailbreak via a computer after each reboot).

The initial setup involves putting your device into DFU mode and running scripts. After that, the device reboots into jailbroken mode. From there, you can install jailbreak tweaks and other add-ons.

Semaphorin is a jailbreak/downgrade tool for iOS 7 to iOS 12

Semaphorin Compatibility

Initially, Semaphorin officially supported the iPhone 5s, iPad mini 2, and iPad Air 1. It quickly added the iPad mini 3, iPad mini 4, iPad Air 2, iPhone 6/6 Plus, iPhone 6s/6s Plus, and iPhone SE (2016). These are the following chips:

There GitHub page The project’s official statement also states that support for the A10X and A11 is not yet available, but will be soon.

Mac required

As for the Mac, there are also restrictions. Anything newer than macOS Catalina is valid, but it must have an Intel chip and have Java 8, Python 3, pyimg4, a USB-A port (USB-C is not supported), and at least 20 GB of free hard drive space, among other things. There is a command-line version of this tool, as well as a functional version with a graphical user interface (GUI).

Compatible iOS versions range from iOS 7 to iOS 12, as of now.

Warnings

Be careful, the developer warns that his script will delete everything on your phone, including the core operating system if you don’t upgrade to iOS 10.3.3 or later.

Make sure to backup all your data before using this script, as anything on the device before running this script will be unrecoverable afterwards. Use this script at your own risk. We are not responsible for any damage caused by using this script.

How to install Semaphorin

To use this app, you must upgrade to a supported version and have a supported device.

Here are the steps:

  • Install GIT on Mac via Terminal: xcode-select install
  • Download the project to the directory of your choice: git clone && cd Semaphorin
  • Connect the device and proceed to DFU mode
  • Run the Semaphore script: sudo ./semaphorin.sh XX –restore
    For example, you can write sudo ./semaphorin.sh 11.1 –restore for iOS 11.1
  • The script needs to back up important files from your current version of iOS before you can downgrade. When the script asks
  • Please enter the version of iOS currently installed on your device, enter your current iOS version and press Enter to continue.

  • The downgrade process for your device should then begin. Please follow the on-screen instructions. This may take some time. Your device will reboot several times.

  • If you’ve downgraded to iOS 10 or later, use the jailbreak app on your home screen to begin jailbreaking your device.

If you want to know more about the Semaphorin project, head over to theOfficial Github

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