This tool is only relevant for very old hardware and 32-bit versions of Windows. It will not work on modern devices (iPhone 12, 13, etc.) or current iOS versions. Releases · iH8sn0w/iREB-2.0 - GitHub

By injecting a specialized environment into the device's volatile memory, it tricked iTunes into seeing an open, valid restoration pipeline.

is a lightweight Windows-based utility built to place legacy iPhone, iPad, and iPod touch models into a pwned DFU (Device Firmware Update) state .