How to Jailbreak Iphone 6s 11.4

Jailbreak iOS 11.3.1 Tutorial - iPhone [Electra]:

Supported iOS 11 versions:

iOS 11, iOS 11.0.1, iOS 11.0.2, iOS 11.0.3, iOS 11.1, iOS 11.1.1, iOS 11.1.2, iOS 11.2, iOS 11.2.1, iOS 11.2.5, iOS 11.2.6, iOS 11.3 and iOS 11.3.1

Not supported iOS 11 versions:

iOS 11.4, iOS 11.4.1

Supported iPhones:

iPhone X
iPhone 8
iPhone 8 Plus
iPhone 7
iPhone 7 Plus
iPhone 6s
iPhone 6s Plus
iPhone 6
iPhone 6 Plus
iPhone SE
iPhone 5s

Jailbreak iOS 11.3.1 Step-by-Step Guide iPhone [Electra]:

Recommended: Enable Airplane Mode, Disable WiFi, Disable Siri, and Reboot your iOS Device.

Step 1: Download Electra Jailbreak and Cydia Impactor

Download the latest version of Electra Jailbreak IPA from the official website.
Download Cydia Impactor from the official website. Cydia Impactor is available for macOS, Windows, Linux (32-bit and 64-bit).

Coolstar released two versions of the Electra Jailbreak:

One version uses multipath tcp exploit but requires an Apple Developer Account. It is supposed to have a higher success rate.
One version uses vfs exploit but doesn't require an Apple Developer account.

If you have an Apple Developer account then you should click on the Download (Dev Account) button to download Electra Jailbreak that uses the multipath tcp exploit.

If you don't have the Apple Developer account, click on the Download (Non Dev Account) button to download Electra Jailbreak that uses thevfs exploit.

Do not download Electra Jailbreak from other sites, because they could contain malware.

Step 2: Install/Sideload Electra IPA using Cydia Impactor

Connect your iPhone to the computer.
Launch Cydia Impactor on your computer. (It will detect your iPhone).
Drag the Electra Jailbreak IPA on to its GUI.
Enter the Apple ID and password for your Apple Developer account when prompted, and wait for Cydia Impactor to sideload the signed app on your iPhone.

Troubleshooting: If you hit provision.cpp:168′ error while trying to sideload Electra IPA:

How to Fix 'provision.cpp:168' Errors While Using Cydia Impactor

Step 3: Trust Developer Profile

Launch the Settings app (after the Electra Jailbreak IPA is successfully sideloaded).
navigate to:

Settings > General > Profile(s) & Device Management

(in some iOS versions it may just beGeneral > Device Management).

Tap on the entry with your Apple ID under Developer app.
then tap on Trust "<your apple id>".
Tap on the Trust button.
The status will change to "Delete app".

Step 4: Run Jailbreak Process

Launch the Electra Jailbreak app.
TapJailbreak button to start the jailbreak process.

It will go through 3 stages, the second stage can take a little longer. After the second stage, your device should respring.

Step 5: Wait for Jailbreak to Complete

After some time, you should see the Home screen. If you launch the Electra app again, it should inform you that your device is "Already jailbroken".

Cydia should also be installed on your Home screen. You should be able to launch it and install the jailbreak apps and tweaks. If you don't see Cydia on the Home screen, then launch Electra Jailbreak app again and keep trying until it works. You may need to try several times till it works.

That's it!

On iOS 11.3-11.3.1, the device will reboot twice and Electra will need to be re-run after the first reboot

If the iOS 11.3.1 Jailbreak with Electra fails, follow these Troubleshooting Tips:

Jailbreak iOS 11.3.1 Electra Troubleshooting Guide

What means "Semi-Untethered Jailbreak"?

A semi-untethered jailbreak, means that when your device restarts, the jailbreak will be disabled. You cannot use any jailbreak tweaks you installed and Cydia will crash when launched.

To re-jailbreak, simply open the Electra jailbreak app and perform the jailbreak again. Your device will then go back to the jailbroken state.

When Does the Electra Jailbreak App Expire & How Do I Renew It?

If you are installing the Electra app with a free Apple ID, it will expire after 7 days. You have to re-install it via Cydia Impactor to extend it for another 7 days. The steps are the same as outlined above.

You need the Electra Jailbreak app only when you want to re-jailbreak your device after rebooting your iPhone, so even if it expires, the jailbreak will remain as is.

How to Jailbreak Iphone 6s 11.4

Source: https://jailbreaktutorials.github.io/Jailbreak-iOS-11.3.1-Tutorial-iPhone-Electra/