AppSync Unified has been updated to version 6.1 that now supports latest iOS 11, 11.1.2, 11.2 and 11.3 and can also be installed without jailbreak. It is one of the most popular Cydia tweak.
The latest version of AppSync Unified 6.1 fixes lot of bugs that were present in previous version and aim to support Electra Jailbreak for iOS 11 and iOS 11.1.2. It fixes the most common “asu_inject” bug that caused problem on 32 bit iDevices.
Those readers who are unaware of AppSync Unified function, it is a tweak that allow you to run unsigned app (third party) on your iDevice forever without any issues. All you need will be to just sideload them using Cydia Impactor.
There are two methods to install AppSync Unified 6.1 for iOS 11/11.2/11.3. One is with jailbreak and second without jailbreak.
Search for “AppSync Unified 6.1”.
If you do not want to jailbreak your iDevice, you can still install AppSync Unified. But first you will need to install Cydia using iNoCydia. Once done, follow the above steps to install AppSync Unified 6.1 for iOS 11 without jailbreak.
Let us know which method you tried to install AppSync Unified 6.1 on your iPhone to try out third party apps.