Electra Jailbreak

Electra jailbreak toolkit released to jailbreak iOS 11 & higher versions running all 64-bit devices. Electra jailbreak developed by the famous tweak developer & hacker, Coolstar.
Currently, Electra has improved the success rate of jailbreak and Cydia just added to the Electra.
2) Electra Computer Method
1) Electra Online Method

Electra Online Method

Electra Online method is the easiest way to install Electra on your device and this is NO PC method. You must have to install zJailbreak app store or Xabsi app store to install Electra.
Electra iOS Versions Compatibility : iOS 11.1.2 , iOS 11.1.1, iOS 11.1, iOS 11.0.3, iOS 11.0.2, iOS 11.0.1, iOS 11
Electra Device Compatibility : iPhone X, iPhone 8/8 Plus, iPhone 7/7 Plus, iPhone SE, iPhone 6S/6S Plus, iPhone 6/ 6 Plus, iPhone 5S, iPad 5(2017), iPad Pro 12.9 (1st & 2nd generation), iPad Pro 9.7, iPad Pro, iPad Air 2, iPad AiriPad Mini 4, iPad Mini 3, iPad Mini 2, iPod Touch 6
Step Guide  
Step 01 - First you need to Install the zJailbreak or Xabsi on your device. Then you can install Pigsy online JB app exclusive on zJailbreak/Xabsi.
Step 02 - Open the Pigsy Online JB app. Tap on Electra Jailbreak.
Step 03 -  Tap on install. Now Electra app will be installed on your device.
Step 04 -  Launch Electra app from your device homescreen.
Step 05 - Tap on jailbreak button.
Step 06 - Once complete the process, you can find Cydia on your device homescreen.

Electra Computer Method

You should have MAC or Windows computer to complete this process.
Step Guide
Step 01 - Download the Electra.IPA from the following button.
Step 02 - Download the Cydia Impactor version according to your computer.
Step 03 - Connect your device to the computer. Launch Cydia Impactor from your computer. Drag and Drop  Electra IPA into the Cydia impactor.
Step 05 - Once complete the process,  Electra Jailbreak app will be available on your device homescreen.
Step 06 - Before launching the app, you need to verify the developer profile. Go to the Settings --> General and Profile and Device management --> Trust.
Step 07 - Now Launch the Electra app from your device. Tap the Jailbreak button to start the process. Then tap  Continue Jailbreak from popup message.
Step 08 - It will take few minutes, Once complete the jailbreak process,  your device will reboot and Cydia icon will be available on your device home screen.
Note - Electra jailbreak is semi-tethered. So you have to re-jailbreak the device after every reboot.
How to Install Jailbreak themes/tweaks
Still, most of packages/sources need to be updated for iOS 11 & higher version even Cydia update also pending by saurik. Until then you can install  Jailbreak themes/ tweaks themes from following method.
1) Electralyzed Deb Installer - This will allow you to install Jailbreak tweaks/themes remotely your iOS 11 to iOS 11.1.2 running device. Also, you can uninstall themes/tweaks using Electralyzed Deb Installer very easily. You just need to run Electralyzed Deb Installer from your Windows or MAC PC.
You can install FilzaJailed from filzajailed.com according to instructions. Also, you can install FilzaJailed from the zJailbreak app store.
Zip App Free is a default iOS app. You can download it from App Store for free. Click here to to download Zip App Free.
Step 01 - Visit this page from your device Safari browser. Select a theme and tap the link.
Theme.Acesierrax.zip /2018-01-21 / 15:2216M

Theme.Acies2-beta.zip /2018-01-18 / 14:52541K

Theme.Aero.zip /2018-01-18 / 14:5024M

Theme.Afterhours10.zip /2018-01-18 / 14:4914M

Theme.Amber.zip /2018-01-15 / 18:3012M

Theme.Amour_.zip /2018-01-13 / 13:547.1M
Theme.Elite8.zip / 2018-01-15 / 18:114.4M

Theme.Fizip.zip / 2018-01-21 / 15:4218M

Theme.GoodsCwios.zip / 2018-01-21 15:4217M

Theme.Gunnii-10-.zip / 2018-01-15 / 18:104.3M

Theme.Hypsta2.zip / 2018-01-21 / 15:4253M

Theme.Imac holal.zip / 2018-01-14 / 07:08785K

Step 02 - You will be redirected to the following page and Tap the "Open in ZipApp Free."
Step 03 - It will be downloaded to the "Imported Files" folder. Then You can extract the zip file using "Open in ZipApp Free."
Step 05 - Now quit from "Open in ZipApp Free" and Open the FilzaJailed app.
Step 04 - Open the extracted folder. There will be another folder or collection of folders.
Step 06 - Go to Favorite (Star mark on below) ---> App Manager ---> ZipApp Free.
Step 07 -  Then Tap the ZipApp Free ---> Documents ---> Imported Files. It has extracted theme folder.
Step 08 - Open the Extracted theme folder and Copy all the folders inside of it. Go back to the root folder, Open Library, Themes and paste the copied themes folder into it.
Step 09 - Now Open the Anemone. If you have already open Anemone, clear the cache and open again. Otherwise, restart your device.
Now you can find the themes of Anemone. Now you can apply the themes to your Jailbroken iOS 11 to iOS 11.1.2 devices.
Step Guide to Change Dark Mode in iOS 11 to iOS 11.1.2
Step 01 - Download the Dark Messages Pangu8 zip file. Extract it using the ZipApp Free as the above guide.
Step 02 - Open FilzaJailed. Go to Favorite (Star mark on below) ---> App Manager ---> ZipApp Free ---> Documents ---> Imported Files ---> Pangu8.
Step 03 - There are available DarkMessagesSetting.plist file & two folders as folder 1 , DarkMessages.bundle. Now open Folder 1 and copy all four files.
Step 04 - Back to the root folder. Then open Bootstrap --> Library -- SB Inject. Paste the files to here.
Step 05 - Then copy the DarkMessagesSetting.plist to the following path.

Bootstrap ---> Library ---> Preferenceloader ---> Preferences.Then paste here.
Step 06 - Copy the DarkMessages.bundle folder to the following path.

Bootstrap --> Library -- Preference Bundles.Now paste the DarkMessages.bundle folder to here.
Step 07 - Restart your device. Now you can active dark messages on your settings.
Step Guide to get iPhone X Features on older iPhone
Step 01 - Download the FluidEnabler from Pangu8 zip file. Extract it using the ZipApp Free.
Step 02 - Open FilzaJailed and Go to App Manager by Clicking the down below Star mark.
Step 03 - Go to ZipApp Free --> Documents  --> Imported Files  --> Pangu8FluidEnabler  --> usr directory SB inject. Click edit to Select the both files and Copy them.
Step 04 - Now go back to the root folder. Open the usr directory --> Lib --> SB Inject and paste the copied files here. (You may need to try several times to paste these.)
Step 05 - Once Paste just reboot your device and Run Electra jailbreak app again.
Electra Jailbreak compatible Tweaks & Themes

How to Remove/Uninstall Electra

Coolstar introduced the uninstall bash script. This script completely removes everything of this application including Anemone and associated themes without restoring your iDevice. Here is the easy step guide to remove Electra without a computer.
Step 01 - Install the iTerminal app from the official App Store.
Step 02 - Open the iTerminal. Tap on a SSH to set up a connection using the following details.
Nickname: Type Anything you want--> Host Name:Enter your Wifi IP Address--> Port: 2222--> User Name: root--> Password: alpin --> Done
Step 03  - Then tap on connect to enter the terminal.
Step 04 - Type the following command.

bash /bootstrap/unjailbreak.sh
Then tap return.
Step 05 - You will get the screen to execute. Again tap on return.
Step 06 -  It will take some time and your device will pause for few seconds. Finally, it will reboot and removes everything associated with the toolkit. Further, you can just delete app icons too.
Click here to get Electralyzed Deb installer to your Windows or MAC PC.
2) Anemone+FilzaJailed app+Zip app Method - You can use the Electra Jailbreak/Anemone, FilzaJailed app and Zip app Free together to install jailbreak features for iOS 11 to iOS 11.1.2 versions. If you need to add Jailbreak features with Electra Jailbreak, you must have installed to the FilzaJailed app and Zip app Free. (Now Anemone has added to the Big Boss repo)
Step Guide to Install themes via Electralyzed Deb Installer
Step 01 - Run Electralyzed Deb Installer from your PC.
Step 02 - Enter Device IP Address ---> password : alpine ----> connect. (You need to enter connected device Wi-Fi IP address. Go to Settings > Wi-Fi > Tap Connected Wi-Fi > IP Address )
Step 03 - Then you will redirect to the deb installer screen.
Step 04 - Select your DEB file which you want to install and click Install. Click here to download DEB files.
Alkaline (Substrate-dependent)
Theme.Classic iOS
Theme.Nagasari iOS10
BioProtect iOS 11-11.1.2
Zepplin (doesn’t work system-wide)
Step 05 - Check your device. You have successfully installed the file on your device.
Note : You can follow the above same method to uninstall the themes/tweaks.
Step Guide to Install themes via Anemone+FilzaJailed app+Zip app Method
However, Electra does not compatible with latest iOS 11.3 Jailbreak (beta) or iOS 11.2.6 jailbreak.
It has two methods to install Electra Jailbreak toolkit.