GitHub

Standalone program and library which can downgrade Java classes/programs down to Java 8.

To use JavaDowngrader as a library in your application, check out the Usage (As a library) section. If you just want to downgrade .jar files you can check out the Usage (Standalone) section. To ...
GitHub

Downgrade/restore and jailbreak iOS devices to signed OTA firmwares

A 64-bit Linux install/live USB or a supported macOS version See supported OS versions and Linux distros below A Linux live USB can be easily created with tools like balenaEtcher or Rufus If something ...