How to fix an infinite respring after the installation of jailbreak Electra for iOS 11
Jailbreak Electra is currently the best tool for iOS 11, but it also has its own problems.
One of the most unpleasant is endless respring. Typically, this problem occurs after installing something that is incompatible with the firmware of the device. Fortunately, it's pretty simple to solve.
Step 1: First, reboot your device.
Step 2: Now run the Electra application and make sure that the switch next to " Tweaks " is off. 
Step 3: Click the Jailbreak button.
Step 4: Now you need to open an application or program that allows you to access the file system of the device. As an example, you can use WinSCP for Windows or Cyberduck for Mac.
Step 5: After accessing the file system, delete the tweak that causes the problem. Usually, this is the last installed tweak, after which an endless respring began. After uninstalling, restart the device and open the Electra application again.
Step 6: Turn on the switch next to "Tweaks" and press the Jailbreak button again.
Step 7: Jailbreak should be activated again and work without problems until you again install a problem tweak.
Remember that it's always important to learn the tweaks that you install, as they may be incompatible with the version of your firmware. After installing incompatible tweaks, serious problems can begin that will not be so easy to solve. Stay attentive. A list of tweaks compatible with Electra jailbreak, you can find here.