Electra jailbreak tool updates v1.0.3 to add support for 11.4 beta 1 - 11.4 beta 3 (multipath only tested on these firmwares).So if you're on iOS 11.4 beta 1 - 11.4 beta 3,you can use the Electra 11.3.1 to jailbreak.However,if you're on iOS 11.2-11.3.1,you should still use the Electra 11.3.1 Multipath to jailbreak.
Make sure to delete 11.4 OTA update, install tvOS profile and reboot before using Electra!
64-bit device running iOS 11.2-11.3.1 and iOS11.4 beta1-beta3，including
iPhone 8 & 8+
iPhone 7 & 7+
iPhone 6S & 6S+
iPhone 6 & 6+
iPad Pro All Series
iPad Air 1 and 2
iPad Mini 2, 3, 4
iPad Pro 1 and 2 (12.9″ 和 9.7″)
iPod Touch 6th
Download Electra 11.3.1 For Free
First of all you need to install Panda Helper to get Electra 11.3.1 for your Device,because you can't get Electra 11.3.1 from the iOS app store.
Step 1: Open Safari and go to Panda Helper official website
http://m.pandahelp.vip/?s=gg or Scan QR code
Step 2: When the website is loaded, tap on the “Regular” option, There you can see “Download Free Version” button, tap on it.
Step 3: When prompted, tap Install to confirm.Wait for a few seconds to download the app.
Step 4： Once done, go to your device's main Settings > General > Profiles & Device Management and trust the profile that belongs to the Panda Helper app.
Step 5: Now launch Panda Helper, search for Electra 11.3.1 and install it.Notice that if you're on iOS 11.4 beta 1 - 11.4 beta 3,you can use the Electra 11.3.1 to jailbreak.However,if you're on iOS 11.2-11.3.1,you should still use the Electra 11.3.1 Multipath to jailbreak.
Step 6: when you open Electra 11.3.1 at first time,if you see the “Untrusted Enterprise Developer”message again.Just go to the Settings app and trust the profile belonging to Electra 11.3.1 like you did with Panda Helper.
Step 7: Now Electra 11.3.1 ready to jailbreak.
How To Jailbreak iOS 11.2-11.3.1 With Electra 11.3.1
Step 7: Run the Electra 11.3.1 jailbreak application from your home screen.There you can see "Jailbreak" button, tap on it.Once done, the device will respring.
Step 8: Then open Electra 11.3.1 again,you will see "Enable Jailbreak" button ，tap on it.
Step 9: Once "Already Jailbroken" appears, it means that your device is jailbroken!And cydia is already on the home screen of your device.
Due to the jailbreak is not perfect jailbreak, Cydia flashback after iPhone reboot, you need to re-activate the jailbreak state, just open Electra 11.3.1 Multipath jailbreak again.