Fugu14 - Untethered iOS 14 Jailbreak

Fugu Jailbreak

Fugu14 is an open-source untethered jailbreak based on the Checkm8 jailbreak exploit. This article covers Fugu14 features, Fugu14 device, and iOS version compatibility, jailbreak using unc0ver with Fugu14, and all about Fugu14.

What is Fugu14?

As mentioned above, Fugu14 is an untethered jailbreak based on the checkm8 jailbreak exploit. Fugu14 is currently supported on the latest devices, iPhone A12 and above.

If you want to find older devices from iPhone X and below, you can use Checkra1n jailbreak, the other jailbreak tool based on the checkm8 jailbreak exploit.

Features of Fugu14

  • The kernel exploit is highly reliable (it will never trigger a kernel panic)
  • A simple TCP shell is available on port 1337
  • Trustcaches put in /.Fugu14Untether/trustcaches/ will be loaded automatically.
  • Executables put in /.Fugu14Untether/autorun/ will be launched during boot (make sure also to create a trust cache for your executable!)
  • Supports Siguza's libkrw library (load /usr/lib/libkrw/libFugu14Krw.dylib and call krw_initializer)
  • (Jailbreak Developers: You can make your jailbreak untethered just by creating a CLI version that supports libkrw, copying it to /.Fugu14Untether/autorun/ and writing a trust cache to /.Fugu14Untether/trustcaches/)

Fugu14 Supported iOS Versions

  • iOS 14.5.1
  • iOS 14.5
  • iOS 14.4.2
  • iOS 14.4.1
  • iOS 14.4

Please note that all of the above iOS versions are supported only on A14, A13, and A12 devices.

Fugu14 Supported Devices

Fugu14 supports all arm64e devices. That means iPhone XS and the latest devices are compatible with Fugu14. Here is the device list that is supported for Fugu14.

  • iPhone12 Pro Max
  • iPhone 12 Pro
  • iPhone 12 Mini
  • iPhone 12
  • iPad Air (4th generation)
  • iPhone 11 Pro Max
  • iPhone 11 Pro
  • iPhone 11
  • iPhone SE (2nd generation)
  • iPad (9th generation)
  • iPhone XS Max
  • iPhone XS
  • iPhone XR
  • iPad Mini (5th generation)
  • iPad Air (3rd generation)
  • iPad (8th generation)

How to Jailbreak unc0ver running on iOS 14.4 - iOS 14.5.1 with Fugu 14

Security researcher Linus Henze developed Fugu14. Soon after the release of Fugu14, developer Pwn20wnd released 7.0.0 with supporting iOS 14.4 - iOS 14.5.1 on A12 - A14 with Fugu14. In this release, users wanted to install Fugu14 manually before installing and running unc0ver on iOS 14.4 - iOS 4.5.1. Then he upgraded unc0ver to v7.0.2 for the same version and device compatibility but installed Fugu14 automatically with AltStore v1.4.8.

Here is the step guide to installing Fugu14 with the unc0ver jailbreak via AltStore.

Note: You must have an iPhone XS or newer device running iOS or iPadOS 14.4 - iOS 14.5.1 (check device compatibility of Fugu14) to proceed with the following step guide.

How to Install AltStore version 1.4.8

Step 1: First, you have to install AltStore version 1.4.8. To download AltStore visit altstore.io official website. Then select macOS or Windows according to which PC you have.

Step 2: Double click the downloaded zip file from the above website and drag the AltStore icon to the application folder.

Step 3: Open the AltStore application

Step 4: In the menu bar, you can see the AltStore icon. Click on it and then click Install Mail Plug-in

Step 5: Then a popup will prompt. Click the Install Plug-in button on it.

Step 6: Then enter your administrator password and click OK.

Step 7: Then a popup will prompt with saying Mail Plug-in Installed. Click OK.

Step 8: Open the Mail app and click the Mail in the menu bar, then select preference.

Step 9: In there, click the General tab and then click the Manage Plug-ins button.

Step 10: Then check the AltPlugin.mailbundle checkbox and click Apply and Restart Mail button.

Step 11: Then a popup will appear. Click Allow Access on it.
Now you can proceed with the Install AltStore on your iPad or iPhone device.

Step 12: Then connect your iPhone or iPad device to the PC with a USB cable.

Step 13: In the menu bar, click the AltStore icon and click Install AltStore -> Your device.

Step 14: Then provide your Apple ID and password, then click Install.

Step 15: In your iPhone or iPad device go to Settings -> General -> Device Management -> Your Apple ID.

Step 16: Then tap on Trust, and it will verify the AltStore. Now you have successfully set up AltStore on your device.

How to Install Unc0ver from AltStore

Step 17: Now visit unc0ver.dev website using your device’s Safari browser.

Step 18: Then tap on the Open in AltStore button and tab on Open.

Step 19: Then AltStore started to install unc0ver. Provide your Apple ID and Password, then tap the Sign In button.

Step 20: After installing the unc0ver app will appear in the App list in AltStore. So now you have successfully installed unc0ver using AltStore.

How to Install the Fugu14 untether?

Step 21: After installing unc0ver jailbreak, AltStore will display a popup saying Jailbreak Requires Untethering. Please note that this popup only shows for Fugu14 compatible devices.
In there, tap on the Install Untether Jailbreak button.

Step 22: Then you will see AltStore start to install the unc0ver placeholder. After it finishes, tap on the Open Placeholder button.

Step 23: Then tap on the Setup Fugu14 button.

Step 24: Then some command will run, and a prompt will appear. Tap on OK on it.

Step 25: Then AltStore will start patching the unc0ver placeholder. After it finishes, tap on the Open Placeholder button.

Step 26: Then tap on the Install Untether button.

Step 27: Then some command will run, and a prompt will appear. Tap on Reboot now on it.

Step 28: After rebooting, open the AltStore app again. It will show a popup. Tap on Install unc0ver on it.

Step 29: Then tap on the Open unc0ver button.

Step 30: Now the untether has been successfully installed.

How to Jailbreak iOS 14.4 - iOS 14.5.1 using Unc0ver Jailbreak

Step 31: Open the unc0ver app and tap on the Jailbreak button.

Step 32: After running unc0ver jailbreak, you will be asked to reboot your device before completing the jailbreak.

Step 33: Tap on OK when the popup appears.

Step 34: Then tap on the Jailbreak button again.

Step 35: After completing the jailbreak process, it will ask to reboot your device one more time. Tap on OK for a final reboot.

Now you have successfully jailbroken your A12 - A14 device running on iOS 14.4 - iOS 14.5.1 with unc0ver and Fugu14!

Fugu14 Latest News

Coolstar Reveals that Taurine will be released for iOS 14.3 - iOS 14.5.1 with Fugu14

Developer Coolstar has shared his work on Fugu14 via his official Twitter account. He reveals that he is implementing Taurine jailbreak for iOS 14.3 - iOS 14.5.1 with Fugu14. Furthermore, he says users will have a complete package of everything together and no need to install Fugu14 separately.

Fugu Jailbreak for iOS 15

Fugu jailbreak developer recently released Fugu14 with supporting iOS 14.5.1 and below. But not yet confirmed for supporting the above versions from iOS 14.5.1.
iOS 15 supporting Fugu is another hope for jailbreakers who are waiting for jailbreak tools release. But there is no clue on Fugu jailbreak for iOS 15 and above. But Fugu developers are trying to release a new tool of Fugu for supporting iOS 15. It may be named Fugu15. Stay with taig9 for future updates on Fugu jailbreak.