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GitHub
<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav></div></header> <div class="sidebar-mask"></div> <aside class="sidebar"><nav class="nav-links"> <div class="nav-item"><a role="button" aria-label="Switch to light mode" class="nav-link"><span>Switch theme</span></a></div> <a href="https://github.com/dortania/OpenCore-Legacy-Patcher/" target="_blank" rel="noopener noreferrer" class="repo-link">
GitHub
<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Introduction</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/START.html" class="sidebar-link">What is OpenCore?</a></li><li><a href="/OpenCore-Legacy-Patcher/MODELS.html" class="sidebar-link">Supported Models</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Setting up</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/INSTALLER.html" class="sidebar-link">Download and build macOS Installers</a></li><li><a href="/OpenCore-Legacy-Patcher/BUILD.html" class="sidebar-link">Building and installing OpenCore</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Installation</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/BOOT.html" class="sidebar-link">Booting OpenCore and macOS</a></li><li><a href="/OpenCore-Legacy-Patcher/POST-INSTALL.html" class="sidebar-link">Post-Installation</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Misc</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/TROUBLESHOOTING.html" class="sidebar-link">Troubleshooting</a></li><li><a href="/OpenCore-Legacy-Patcher/DEBUG.html" class="sidebar-link">How to debug with OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/UNINSTALL.html" class="sidebar-link">Uninstalling OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/ICNS.html" class="sidebar-link">Creating custom icons for OpenCore and Mac Boot Picker</a></li><li><a href="/OpenCore-Legacy-Patcher/TERMS.html" class="sidebar-link">OpenCore Patcher Terminology</a></li><li><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html" aria-current="page" class="active sidebar-link">Explaining the patches in OpenCore Legacy Patcher</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html#opencore-settings" class="sidebar-link">OpenCore Settings</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html#injected-kext" class="sidebar-link">Injected Kext</a></li></ul></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-succinct-content content__default"><h1 id="explaining-the-patches-in-opencore-legacy-patcher"><a href="#explaining-the-patches-in-opencore-legacy-patcher" class="header-anchor">#</a> Explaining the patches in OpenCore Legacy Patcher</h1> <p>In our patcher, there are numerous patches used to ensure a stable system. Here we're going to go over what patches are used and why we recommend or even require them.</p> <h2 id="opencore-settings"><a href="#opencore-settings" class="header-anchor">#</a> OpenCore Settings</h2> <h3 id="acpi-patch"><a href="#acpi-patch" class="header-anchor">#</a> ACPI -&gt; Patch</h3> <ul><li>EHCx and XHC1 Patches
<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav> <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Introduction</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/START.html" class="sidebar-link">What is OpenCore?</a></li><li><a href="/OpenCore-Legacy-Patcher/MODELS.html" class="sidebar-link">Supported Models</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Setting up</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/INSTALLER.html" class="sidebar-link">Download and build macOS Installers</a></li><li><a href="/OpenCore-Legacy-Patcher/BUILD.html" class="sidebar-link">Building and installing OpenCore</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Installation</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/BOOT.html" class="sidebar-link">Booting OpenCore and macOS</a></li><li><a href="/OpenCore-Legacy-Patcher/POST-INSTALL.html" class="sidebar-link">Post-Installation</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>Misc</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/TROUBLESHOOTING.html" class="sidebar-link">Troubleshooting</a></li><li><a href="/OpenCore-Legacy-Patcher/DEBUG.html" class="sidebar-link">How to debug with OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/UNINSTALL.html" class="sidebar-link">Uninstalling OpenCore</a></li><li><a href="/OpenCore-Legacy-Patcher/ICNS.html" class="sidebar-link">Creating custom icons for OpenCore and Mac Boot Picker</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Documentation</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/OpenCore-Legacy-Patcher/TERMS.html" class="sidebar-link">OpenCore Patcher Terminology</a></li><li><a href="/OpenCore-Legacy-Patcher/HOW.html" class="sidebar-link">Boot Process with OpenCore Legacy Patcher</a></li><li><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html" aria-current="page" class="active sidebar-link">Explaining the patches in OpenCore Legacy Patcher</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html#opencore-settings" class="sidebar-link">OpenCore Settings</a></li><li class="sidebar-sub-header"><a href="/OpenCore-Legacy-Patcher/PATCHEXPLAIN.html#injected-kext" class="sidebar-link">Injected Kext</a></li></ul></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-succinct-content content__default"><h1 id="explaining-the-patches-in-opencore-legacy-patcher"><a href="#explaining-the-patches-in-opencore-legacy-patcher" class="header-anchor">#</a> Explaining the patches in OpenCore Legacy Patcher</h1> <p>In our patcher, there are numerous patches used to ensure a stable system. Here we're going to go over what patches are used and why we recommend or even require them.</p> <h2 id="opencore-settings"><a href="#opencore-settings" class="header-anchor">#</a> OpenCore Settings</h2> <h3 id="acpi-patch"><a href="#acpi-patch" class="header-anchor">#</a> ACPI -&gt; Patch</h3> <ul><li>EHCx and XHC1 Patches
<ul><li>Reason: Required for proper USB operation</li> <li>Logic: Avoids USB maps of newer models attaching and breaking USB port functionality</li> <li>Models: All models require</li></ul></li></ul> <h3 id="booter-quirks"><a href="#booter-quirks" class="header-anchor">#</a> Booter -&gt; Quirks</h3> <ul><li>ForceBooterSignature
<ul><li>Reason: Required to ensure Hibernation support</li> <li>Logic: Tricks boot.efi into thinking OpenCore is Apple's firmware</li> <li>Models: All models require</li></ul></li></ul> <h3 id="deviceproperties-add"><a href="#deviceproperties-add" class="header-anchor">#</a> DeviceProperties -&gt; Add</h3> <ul><li><code>PciRoot(0x0)/Pci(0x15,0x0)/Pci(0x0,0x0)</code></li> <li><code>PciRoot(0x0)/Pci(0x1C,0x4)/Pci(0x0,0x0)</code></li> <li><code>PciRoot(0x0)/Pci(0x1C,0x3)/Pci(0x0,0x0)</code></li> <li><code>PciRoot(0x0)/Pci(0x1C,0x5)/Pci(0x0,0x0)</code></li> <li><code>PciRoot(0x0)/Pci(0x1C,0x1)/Pci(0x0,0x0)</code> <ul><li>Reason: Required to ensure Wifi works with full, native support</li> <li>Logic: Tricks AirPortBrcmNIC.kext into thinking our device is a BCM94360 (<code>14e4,43ba</code>)</li> <li>Models: <a href="https://github.com/dortania/OpenCore-Legacy-Patcher/blob/79ab028b0a039e97a528e0b99c876d95d9c2d41d/Resources/ModelArray.py#L199-L225" target="_blank" rel="noopener noreferrer">Machines with BCM943224 and BCM94331 chipsets<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul></li> <li><code>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)</code></li> <li><code>PciRoot(0x0)/Pci(0x1,0x0)/Pci(0x0,0x0)</code> <ul><li>Reason: Required to ensure Brightness Control works on upgraded iMacs</li> <li>Logic: Sets AppleBackLight properties</li> <li>Models: iMac11,x and iMac12,x with upgraded Nvidia Metal GPUs</li></ul></li> <li><code>PciRoot(0x0)/Pci(0x2,0x0)</code> <ul><li>Reason: Disables internal GPU to fix sleep issues on upgrades iMacs</li> <li>Logic: Tricks macOS into thinking iGPU is a generic PCI device</li> <li>Models: iMac12,x with upgraded Metal GPUs</li></ul></li></ul> <h3 id="kernel-patch"><a href="#kernel-patch" class="header-anchor">#</a> Kernel -&gt; Patch</h3> <ul><li>SMC Patch
<ul><li>Reason: Required to avoid SMC Firmware updates</li> <li>Logic: Patches out <code>smc-version</code> in AppleSMC.kext, requires SMC-Spoof.kext for full functionality</li> <li>Models: All models require</li></ul></li> <li>IOHIDFamily Patch
@@ -45,9 +45,9 @@
<ul><li>Reason: Enables NightShift support on unsupported models</li> <li>Models: 2011 and older, MacBookPro9,x included</li></ul></li> <li>SMC-Spoof
<ul><li>Reason: Spoofs SMC version to 9.9999</li> <li>Models: All models require</li></ul></li></ul></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/dortania/OpenCore-Legacy-Patcher/edit/main/docs/PATCHEXPLAIN.md" target="_blank" rel="noopener noreferrer">Help us improve this page!</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">3/16/2021, 7:43:08 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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