Jailbreaks Are An Essential Part Of Loading Tweaks And Apps On To Older Devices. The Jailbreak You Need Changes Depending On Your iOS Version. These Are Some Useful Tools To Help You Jailbreak.

Desktop

3u Tools (Windows and Mac) This Tool Has Many Great Features. Including Jailbreaks For Almost Any Version Of iOS.

Download Link:  https://url.3u.com/

Legacy iOS Kit. (Linux and Mac) This Tool Is For Technical Users As It Is Used Entirely In The Terminal.

It Allows You To Jailbreak And Downgrade Your Devices To Older iOS Versions.

GitHub: https://github.com/LukeZGD/Legacy-iOS-Kit/releases

Mobile:

Jailbreaks.app (iOS 8.4.1 to iOS 10.3.x) A Tool That Lets You Install Jailbreaks Online Not Guaranteed To Always Work. Website: https://jailbreaks.app/legacy.html