Electra is the most reliable tool for jailbreak iOS 11 to iOS 11.1.2 versions. The new version of Electra installs Cydia. However, you cannot install system tweaks/apps using Cydia until saurik upgrades it for iOS 11. You need to use alternative methods to install jailbreak apps/tweaks to your device together Electra.
01) Electra jailbreak + Electralyzed Deb Installer method
This is the easiest method to install system tweaks/apps to your device. Jailbreak your device with Electra first. Then you can use Electralyzed Deb Installer to install deb files to your device. Electralyzed tool is developed by 6ilent.
Use following guide to Install/uninstall Tweaks remotely & Install/uninstall themes remotely.
Step 01 - First, it needs to jailbreak your iOS 11 - iOS 11.1.2 device using Electra jailbreak tool.
Step 02 - Download Electralyzed file from the following button.
Step 03 - Extract the downloaded zip file & open the tool.
Step 04 - Enter following details in the popup Window.
Password - alpine
IP Address - Your connected IP Address. Get if from > Settings > Wi-Fi - Tap Connected Wi-Fi > Your IP Address
Step 07 - Just tap on the ”Install.”
Step 05 - Now, you will be redirected to the deb installer Window.
Step 06 - Select DEB files which are you want to install. Click here to download DEB files.
Step 08 - Check your iOS device. You have installed the DEB file on your iOS device.
You must have installed the FilzaJailed app and Zip app Free to use this method. First, It may jailbreak your device with Electra. This method will allow you to install jailbreak themes to your iOS 11 device through FilzaJailed + ZipApp. Pangu8 team has developed a method to install iOS 11 Jailbreak tweaks.
Filzajailed which is allow you to full root access to all the files in the directory on your iPhone, iPad or iPod touch without Jailbreaking. Zip App Free is a default iOS app. You can download it from App Store for free.
Step Guide to install Jailbreak themes to iOS 11 - iOS 11.1.2
Step 01 - Visit this page from your device Safari browser, Select a theme and tap the link.