Download OpenCore Legacy Patcher v2.4.1
The latest stable release of OpenCore Legacy Patcher (OCLP), hosted by the Dortania team on GitHub. We link directly to the signed OpenCore-Patcher.pkg — no mirrors, no repackaging.
Below is the official OpenCore Legacy Patcher v2.4.1 installer (702 MB), pulled from Dortania's official GitHub release. The PKG is signed by the maintainers, the SHA-256 below matches the upstream value, and the link points straight to GitHub's CDN.
Verify the download by running shasum -a 256 OpenCore-Patcher.pkg in Terminal and comparing with the hash above. Cross-check against the values on the official Dortania GitHub release page. For the changelog, see OCLP v2.4.1 release notes.
Optional: Uninstaller PKG
The uninstaller removes the helper app and utilities — it does not by itself undo root patches or remove OpenCore from the EFI. To fully return to a stock Mac, use Revert Root Patches and Uninstall OpenCore from inside the patcher app first, then run this PKG.
System requirements
- An Intel Mac (or Apple Silicon Mac, for running the GUI only).
- macOS 10.15 Catalina or newer on the host where you run OCLP. The Mac you intend to patch can be running anything from El Capitan onward.
- ~700 MB of free space for the PKG and another 15–30 GB for a macOS installer USB.
- A USB drive (16 GB or larger) if you're creating a bootable installer.
- Administrator access to the Mac you're patching.
- A Time Machine backup — non-negotiable on a first install.
Install flow at a glance
Back up the Mac. Back up the Mac with Time Machine. Never skip this on a first install.
Download the OCLP installer. Download and run OpenCore-Patcher.pkg from the official Dortania GitHub release.
Create a macOS installer. Launch OpenCore-Patcher.app from /Applications. Click Create macOS Installer and let it download the macOS version you want from AppleDB.
Write installer to USB. Plug in a 16 GB or larger USB drive and let the patcher write the macOS installer to it.
Build and Install OpenCore. Back in the patcher, click Build and Install OpenCore, then write OpenCore to your internal disk's EFI partition. Reboot.
Boot the installer and install macOS. Hold the Option key at boot, pick the EFI Boot entry, choose the macOS installer, then install macOS as normal.
Apply Post-Install Root Patches. After the new macOS is up and running, re-open the patcher and click Post-Install Root Patch. Reboot once more to finish.
For the full, model-specific install walkthrough, follow the official Dortania install guide. It has the per-model quirks (T1 Macs, MacBookAir6,x USB issues, dual-GPU iMacs, etc.) that a one-page summary can't cover.