Step1: Ensure that in case you have put in some incompatible jailbreak tweaks to your iDevice.
Step2: After iDevice is restarted, don’t click on mach_portal at this second.
Step3: Activate plane mode. Look forward to a couple of seconds, and click on mach_portal.
Step4: Turn on sub now, you’re recommended to turn on sub the usage of terminal.
Step5: Input Su (your iDevice’s password) respring in terminal.
Step6: After which your iDevice will restart robotically. After that, your iDevice gained’t restart hastily once more.