iATKOS | United Kingdom

Step 1: Force Restart Your Mac

1. Press and hold the Touch ID/Power button for 10-15 seconds

2. Release when the screen goes completely black

3. Wait 10 seconds, then press Power again to restart
   (Note: This won’t delete data)

Step 2: Boot into Safe Mode

1. Shut down your Mac

2. Press the Power button, then immediately hold Shift

3. Release Shift when you see the login screen

4. Log in → "Safe Boot" will appear in the menu bar
   (Clears caches and disables non-critical kexts)

Step 3: Delete Problematic OCLP Files

1. Open Terminal (Finder → Applications → Utilities)

2. Run these commands:

sudo rm -rf /Library/Extensions/AMDRadeon*.kext
sudo rm -rf /Library/Extensions/NVDA*.kext
sudo kextcache -i /

3. Enter your admin password when prompted
   (Removes graphics drivers causing freezes)

Step 4: Reinstall OpenCore Correctly

1. Download the OFFICIAL OCLP 2.4.0 from:
   dortania.github.io/OpenCore-Legacy-Patcher
   (Avoid third-party mirrors!)

2. Launch OCLP → Click ⚙️ Settings → Enable:

   • Verbose mode

   • Skip USB patches

   • Disable "Install Graphics Support"

3. Click Build and Install Root Patches

4. DO NOT TOUCH the Mac during installation (15-20 min)

Step 5: Reset NVRAM After Patching

1. After successful patching, shut down your Mac

2. Press Power, then hold Option + Command + P + R

3. Hold for 20 seconds until you hear the startup chime twice

4. Release to boot normally
   (Clears outdated firmware settings)

If Still Frozen: Emergency Recovery

1. Internet Recovery Mode:

   • Restart → Hold Option + Command + R

   • Select "Reinstall macOS" → DO NOT ERASE DISK

2. Terminal Reset:
   In Recovery:

   bash

   Copy

   Download

   mount -uw /
   rm -rf /System/Library/Extensions/AMDLegacy*
   kextcache --clear-staging
   reboot

Prevention Tips:

1. Always back up with Time Machine before patching

2. Use wired Ethernet during patching (WiFi may cause timeouts)

3. Disable FileVault and Secure Boot temporarily in Recovery:
   Settings → Security → Allow user management of kernel extensions

Critical Note:
If your MacBook Pro has dual GPUs (Intel + Radeon), avoid graphics patching until OCLP releases a Sequoia-compatible update. Monitor fixes here:
OCLP 2.4.1 Tracking Issue

Expected Outcome:
Your MacBook Pro (2017) should boot normally into macOS Sequoia 15.6 with full functionality. Monitor system stability for 24 hours before re-enabling FileVault/Secure Boot.