# oclp.dev (OCLP Field Guide) > Independent, source-checked guide to OpenCore Legacy Patcher (OCLP), the free open-source app by Dortania (https://github.com/dortania/OpenCore-Legacy-Patcher) that lets Intel Macs from 2008 to 2019 run macOS Big Sur through macOS Tahoe. Not affiliated with Dortania. We do not host the software. Contact: hello@oclp.dev ## Key facts - Latest stable release: 2.5.1 (2026-09-19). Newest pre-release: 3.0.0-rc.5 (2026-10-28), version 3.0.0 on main, which adds macOS Tahoe support. - Official download: https://github.com/dortania/OpenCore-Legacy-Patcher/releases (OpenCore-Patcher.pkg). Official docs: https://dortania.github.io/OpenCore-Legacy-Patcher/ - 86 Mac model identifiers are supported. T2 Macs (2018-2020) and Apple silicon Macs are not. - No Intel Mac can run macOS 27 Golden Gate, patched or not; Dortania has no plans to support it. - Newest installers the app offers (AppleDB, 2026-11-05): macOS Tahoe 26.7.2 (25G332), Sequoia 15.8.2, Sonoma 14.8.9, Ventura 13.7.8. ## Start - [Home](https://oclp.dev/): Independent guide to OpenCore Legacy Patcher: check if your Mac can run macOS Tahoe or Sequoia, download it safely, and install it step by step. - [Download OCLP](https://oclp.dev/download/): Where to download OpenCore Legacy Patcher, which of the three files you need, stable 2.5.1 or 3.0.0 for Tahoe, and how to check the download is genuine. ## Site - [About](https://oclp.dev/about/): Who runs oclp.dev, how we research and test OpenCore Legacy Patcher, our sources, and our relationship to Dortania (none). - [Contact](https://oclp.dev/contact/): Email the OCLP Field Guide about corrections or suggestions. For help with OpenCore Legacy Patcher itself, use the official channels. - [Corrections](https://oclp.dev/corrections/): How oclp.dev fixes mistakes, keeps pages current with new OCLP and macOS releases, and shows what changed. - [Disclaimer](https://oclp.dev/disclaimer/): oclp.dev is not affiliated with Dortania, OpenCore Legacy Patcher, Acidanthera or Apple. Use the information at your own risk. - [Privacy](https://oclp.dev/privacy/): oclp.dev sets no cookies of its own. Google Tag Manager loads analytics; our tools run in your browser. - [Terms](https://oclp.dev/terms/): Terms for using oclp.dev, an independent informational guide to OpenCore Legacy Patcher. ## Learn - [Alternatives](https://oclp.dev/alternatives/): OCLP vs staying on Apple's macOS, dosdude1, Patched Sur, Linux, ChromeOS Flex and Windows on an old Mac: what each gives you and when to choose it. - [FAQ](https://oclp.dev/faq/): Short, sourced answers about OpenCore Legacy Patcher: Tahoe, macOS 27, supported Macs, safety, USB drives, updates, Windows, uninstalling and more. - [OCLP forks](https://oclp.dev/forks/): What the unofficial OpenCore Legacy Patcher forks do, their status in 2026 (archived, frozen, alpha), and why Dortania recommends the original. - [Is OCLP safe?](https://oclp.dev/is-oclp-safe/): Is OpenCore Legacy Patcher safe and legal? What it changes on your Mac, what it never touches, the security trade-offs (SIP), fake sites, and how to undo it. - [Is it worth it?](https://oclp.dev/is-oclp-worth-it/): Pros and cons of OpenCore Legacy Patcher by Mac age: what you gain, what you give up, and who should not use it. Based on the source code and our tests. - [What to do with an old Mac](https://oclp.dev/old-mac/): Keep an old Mac running with OpenCore Legacy Patcher, switch to Linux or ChromeOS Flex, repurpose it, or sell it. A practical 2026 guide. - [Releases](https://oclp.dev/releases/): Every recent OpenCore Legacy Patcher release explained: 3.0.0 and macOS Tahoe, 2.5.1, 2.5.0, 2.4.1. Dates, downloads and which version to use. - [Our tests](https://oclp.dev/tested/): What we tested: official OCLP packages hashed and signature-checked, installed, screenshotted, and OpenCore built for all 86 supported Macs. - [How OCLP works](https://oclp.dev/what-is-oclp/): How OpenCore Legacy Patcher works: OpenCore, SMBIOS, kexts and root patches explained with a real build log, plus how it differs from a Hackintosh. ## macOS versions - [macOS Big Sur](https://oclp.dev/big-sur/): Which unsupported Macs run macOS Big Sur with OpenCore Legacy Patcher, what Apple dropped, what to expect, and whether Big Sur is right for yours. - [macOS 27 and Intel](https://oclp.dev/macos-27-intel/): macOS 27 Golden Gate drops every Intel Mac, and OpenCore Legacy Patcher has no plans to support it. What each Intel Mac can still run, and for how long. - [macOS Monterey](https://oclp.dev/monterey/): Which unsupported Macs run macOS Monterey with OpenCore Legacy Patcher, what Apple dropped, what to expect, and whether Monterey is right for yours. - [Catalina and older](https://oclp.dev/older-macos/): OCLP supports Big Sur and newer. For macOS Catalina, Mojave and High Sierra on unsupported Macs, dosdude1's patchers are the usual route. When to use which. - [macOS Sequoia](https://oclp.dev/sequoia/): Which unsupported Macs run macOS Sequoia with OpenCore Legacy Patcher, what Apple dropped, what to expect, and whether Sequoia is right for yours. - [macOS Sonoma](https://oclp.dev/sonoma/): Which unsupported Macs run macOS Sonoma with OpenCore Legacy Patcher, what Apple dropped, what to expect, and whether Sonoma is right for yours. - [macOS Tahoe](https://oclp.dev/tahoe/): Which unsupported Macs run macOS Tahoe with OpenCore Legacy Patcher 3.0, what works and what breaks on each, and how to install it step by step. - [macOS Ventura](https://oclp.dev/ventura/): Which unsupported Macs run macOS Ventura with OpenCore Legacy Patcher, what Apple dropped, what to expect, and whether Ventura is right for yours. ## Install - [Boot picker](https://oclp.dev/boot-picker/): The OpenCore boot picker on a patched Mac: try an interactive replica, learn every key, show Recovery, set the default disk, or hide the picker. - [How to install](https://oclp.dev/how-to-install/): Install macOS Sequoia or Tahoe on an unsupported Mac with OpenCore Legacy Patcher 3.0: backup, USB installer, OpenCore, boot picker and root patches. - [Root patching](https://oclp.dev/root-patching/): What OCLP's Post-Install Root Patch installs: all 21 patch sets, which Macs and macOS versions need each, and the KDK and Metallib downloads. - [USB installer](https://oclp.dev/usb-installer/): Make a bootable macOS installer for an unsupported Mac with OCLP: drive size, downloading from Apple, using an existing installer, and common errors. - [OCLP and Windows](https://oclp.dev/windows/): OCLP is a Mac app, so it does not run on Windows. What to do if you only have a PC, and how to run Windows on a Mac patched with OpenCore Legacy Patcher. - [Install without USB](https://oclp.dev/without-usb/): Can you use OpenCore Legacy Patcher without a USB drive? When an in-place upgrade works, how to do it, external SSD installs, and when you do need a USB. ## Fix - [Get help](https://oclp.dev/community/): Where to ask for help with OpenCore Legacy Patcher: the official Discord, r/OpenCoreLegacyPatcher, MacRumors, GitHub. And how to ask so people can help. - [Troubleshooting](https://oclp.dev/troubleshooting/): Paste an OpenCore Legacy Patcher error and get the cause and fix: prohibited sign, no Wi-Fi, error code 71, version mismatch, boot loops and more. - [Uninstall](https://oclp.dev/uninstall/): Remove OpenCore Legacy Patcher completely or in part: revert root patches, delete OpenCore from the EFI partition, uninstall the app, or go native. ## Check my Mac - [Mac compatibility](https://oclp.dev/compatibility/): Check any Intel Mac: the last macOS Apple supports, every macOS OpenCore Legacy Patcher adds (Big Sur to Tahoe), what breaks, and our pick. - [All Mac models](https://oclp.dev/macs/): Pick your Mac by family and year: Apple's last macOS, what OpenCore Legacy Patcher adds, and what to expect, for every Intel Mac from 2006 to 2020. - [T2 Macs (2018–2020)](https://oclp.dev/t2-macs/): Why OCLP does not support Macs with the T2 chip, which macOS each 2018–2020 Intel Mac runs natively, and your options after macOS 27. - [Update an old Mac](https://oclp.dev/update-old-mac/): Is your Mac too old to update? How to get the newest macOS Apple allows, and how OpenCore Legacy Patcher takes 2008–2017 Macs up to macOS Tahoe. ## Use - [What works](https://oclp.dev/features/): Which macOS features work with OpenCore Legacy Patcher: Sidecar, Universal Control, AirPlay to Mac, FileVault, iCloud, Apple Intelligence, iPhone Mirroring. - [Updating](https://oclp.dev/updating/): Update a Mac running OpenCore Legacy Patcher safely: app, OpenCore and root patches, minor vs major updates, and why to turn off auto downloads. ## Mac models - [iMac 2009](https://oclp.dev/macs/imac-2009/): Apple's last macOS for the iMac 2009 is El Capitan–High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2010](https://oclp.dev/macs/imac-2010/): Apple's last macOS for the iMac 2010 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2011](https://oclp.dev/macs/imac-2011/): Apple's last macOS for the iMac 2011 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2012](https://oclp.dev/macs/imac-2012/): Apple's last macOS for the iMac 2012 is Catalina. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2013](https://oclp.dev/macs/imac-2013/): Apple's last macOS for the iMac 2013 is Catalina. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2014](https://oclp.dev/macs/imac-2014/): Apple's last macOS for the iMac 2014 is Big Sur. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2015](https://oclp.dev/macs/imac-2015/): Apple's last macOS for the iMac 2015 is Big Sur–Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2017](https://oclp.dev/macs/imac-2017/): Apple's last macOS for the iMac 2017 is Ventura. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac 2019](https://oclp.dev/macs/imac-2019/): Apple's last macOS for the iMac 2019 is Sequoia. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [iMac Pro](https://oclp.dev/macs/imac-pro/): Every iMac Pro from 2017 to 2017: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [iMac](https://oclp.dev/macs/imac/): Every iMac from 2006 to 2020: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [Mac mini 2011](https://oclp.dev/macs/mac-mini-2011/): Apple's last macOS for the Mac mini 2011 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [Mac mini 2012](https://oclp.dev/macs/mac-mini-2012/): Apple's last macOS for the Mac mini 2012 is Catalina. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [Mac mini 2014](https://oclp.dev/macs/mac-mini-2014/): Apple's last macOS for the Mac mini 2014 is Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [Mac mini](https://oclp.dev/macs/mac-mini/): Every Mac mini from 2006 to 2018: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [Mac Pro 2010–2012](https://oclp.dev/macs/mac-pro-2010-2012/): Apple's last macOS for the Mac Pro 2010–2012 is Mojave. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [Mac Pro 2013](https://oclp.dev/macs/mac-pro-2013/): Apple's last macOS for the Mac Pro 2013 is Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [Mac Pro](https://oclp.dev/macs/mac-pro/): Every Mac Pro from 2008 to 2019: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [MacBook 2015–2017](https://oclp.dev/macs/macbook-2015-2017/): Apple's last macOS for the MacBook 2015–2017 is Big Sur–Ventura. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Air 2011](https://oclp.dev/macs/macbook-air-2011/): Apple's last macOS for the MacBook Air 2011 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Air 2013–2014](https://oclp.dev/macs/macbook-air-2013-2014/): Apple's last macOS for the MacBook Air 2013–2014 is Big Sur. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Air 2015–2017](https://oclp.dev/macs/macbook-air-2015-2017/): Apple's last macOS for the MacBook Air 2015–2017 is Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Air](https://oclp.dev/macs/macbook-air/): Every MacBook Air from 2008 to 2020: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [MacBook Pro 2009](https://oclp.dev/macs/macbook-pro-2009/): Apple's last macOS for the MacBook Pro 2009 is El Capitan. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2010](https://oclp.dev/macs/macbook-pro-2010/): Apple's last macOS for the MacBook Pro 2010 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2011](https://oclp.dev/macs/macbook-pro-2011/): Apple's last macOS for the MacBook Pro 2011 is High Sierra. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2012](https://oclp.dev/macs/macbook-pro-2012/): Apple's last macOS for the MacBook Pro 2012 is Catalina. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2013](https://oclp.dev/macs/macbook-pro-2013/): Apple's last macOS for the MacBook Pro 2013 is Catalina–Big Sur. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2014](https://oclp.dev/macs/macbook-pro-2014/): Apple's last macOS for the MacBook Pro 2014 is Big Sur–Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2015](https://oclp.dev/macs/macbook-pro-2015/): Apple's last macOS for the MacBook Pro 2015 is Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2016](https://oclp.dev/macs/macbook-pro-2016/): Apple's last macOS for the MacBook Pro 2016 is Monterey. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro 2017](https://oclp.dev/macs/macbook-pro-2017/): Apple's last macOS for the MacBook Pro 2017 is Ventura. With OpenCore Legacy Patcher it runs Big Sur to Tahoe. What works, what breaks, and our pick. - [MacBook Pro](https://oclp.dev/macs/macbook-pro/): Every MacBook Pro from 2008 to 2020: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [MacBook](https://oclp.dev/macs/macbook/): Every MacBook from 2006 to 2015: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier. - [Xserve](https://oclp.dev/macs/xserve/): Every Xserve from 2006 to 2009: Apple's last macOS and the versions OpenCore Legacy Patcher adds, by model identifier.