If you never bought it back then, you will need a computer (macOS or Windows) and a tool like or iMazing .

Use period-appropriate tools like Absinthe 2.0 or Redsn0w to jailbreak iOS 5.1.1.

Not all IPAs are created equal. For , you need a version that:

Versions after 2.0 generally require iOS 6 or 7, and will crash instantly on 5.1.1.

Never enter your Apple ID into a 3rd-party "cracked" app store. Hardware Heat: