What should you do if the jailbreak fails? Here are 2 ways for your reference:
If your iPhone jailbreak failed, we suggest you to use another Checkra1n Version to try again. You can follow the steps below:
Step 1: Go to this page and download and install the recommended Checkra1n version.
Step 2: After installed the Checkra1n on your Mac. If there is no problem, then you can jailbreak now.
If you encounter the problem below, you need to follow the guidelines below:
Drag the newly downloaded Checkra1n into the command window and press "Return".
Next, the system will automatically generate the following characters.
If you have the following error codes, don’t worry! Here are the solutions for you.
Error code: -20: Select “Safe Mode” and start jailbreaking again.
Error code: -31: Re-install the iOS firmware from IPSW and try to jailbreak your device again.