OpenCore Legacy Patcher

OpenCore Legacy Patcher is a boot‑loader that enables macOS installation and operation on Apple hardware that is not officially supported by newer OS releases. It injects patches during the boot process, allowing older Macs to run recent versions of macOS without modifying firmware permanently. The tool provides near‑native over‑the‑air updates, handling system upgrades from System Settings with only a few additional steps.

By operating in memory, the patches avoid any lasting changes to the machine’s firmware, while extending compatibility for legacy graphics, Wi‑Fi, and Bluetooth components. It also unlocks features such as Sidecar, AirPlay to Mac, Night Shift, and Universal Control on machines that would otherwise lack them, and adds support for newer functionalities like hardware acceleration and Apple Watch unlock.

The project is maintained as a stable, community‑driven effort, offering documentation, troubleshooting guides, and a forum for developers and users to share solutions. It targets users who wish to extend the usable life of older Macs by running current macOS releases with added capabilities.