OpenCore Legacy Patcher

Experience macOS just like before

Getting Started→

Built with security in mind

Supporting System Integrity Protection(SIP), FileVault 2, .im4m Secure Boot and Vaulting. You're just as secure as a supported Mac

Native OTA updates

Install updates the moment they come out just like on a supported Mac, and no more 12GB+ updates.

Zero firmware patching

No need to patch APFS ROM support, all protocol upgrades are done in memory and never permanent.