How to fix Error (Fatal) in unc0ver jailbreak on iOS 12 [ Tutorial ]


fix Error (Fatal) in unc0ver jailbreak on iOS 12: There are various tweaks available in the jailbreak community. But along with tweaks, there is a various error which is there in those tweaks. Here I am talking about a fatal error which was found in unc0ver jailbreak on iOS 12.

In this blog, I will be talking about how to fix Error (Fatal) in unc0ver jailbreak on iOS 12.  Before moving onto how we can fix those fatal errors but let’s have a look about what the problem is all about.


fix Error (Fatal) in unc0ver jailbreak on iOS 12: Below is the screenshot of the error message which has been displayed on the unc0ver tweak when you first open tweak.

fix Error (Fatal) in unc0ver jailbreak on iOS 12:
fix Error (Fatal) in unc0ver jailbreak on iOS 12:

According to the popup, the issue lies with the “JailbreakViewController.m” file in line 1673. There’s nothing much known about the error then that it due to the boot file extraction.

You can press either option OK or View log but it’s not going to help you in any case.

The developer of pwn20wnd is working on this error to solve it asap. Follow the below steps to solve the problem.



Step 1 Open the unc0ver jailbreak app.

Step 2 Go to the Settings tab and enable the following options.

  • RootFS Restore 
  • Reinstall Cydia (optional)
  • Reset Cydia Cache (optional)

Step 3 Go back to the home screen and tap Jailbreak.


Step 1 As soon as the error message appears, press OK.

Step 2 Open Cydia and install a new tweak/package.

Step 3 When the installation is complete, tap the Restart SpringBoard button to respring your device.

After doing the above steps your device will be functional and it will be in the jailbreak mode.


  • Upgrade to the latest version of unc0ver jailbreak. As of this writing, the latest version is v3.0.0 Beta 30. This is not a fix per se but a general best practice and could even help you bypass the error message.

I hope you like this article. Please share this tweak with your friends and family members so that they can solve this fatal error.