Troubleshooting macOS Sonoma 14.2.1 Update Issues on Late 2016 MacBook Pro

It seems like you're encountering issues while attempting to update your late 2016 MacBook Pro (MBP) to macOS Sonoma 14.2.1. The symptoms you're describing suggest a problem with the update process itself or with the post-update configuration. Here's a guide to help troubleshoot and hopefully resolve the issue:

Guide Step by Step:

1. Backup Your Data: Before proceeding with any troubleshooting, ensure you have a complete backup of your data. This is crucial in case you need to revert to a previous state.

2. Check Storage Space: Verify that you have enough storage space available for the update. Insufficient space can lead to incomplete or failed updates.

3. Download Update Manually: Sometimes, downloading the update through Apple's update mechanism doesn't work correctly. You can try downloading the 14.2.1 update manually from the Apple website and then installing it.

4. Safe Mode: Boot into Safe Mode (hold Shift during startup) and then try installing the update. This can help bypass any software conflicts that might be causing the issue.

5. Reapply Patches: After updating, it's often necessary to reapply patches, especially if you're using tools like OCLP. Since you're already doing this, ensure you're using the correct version of OCLP for macOS Sonoma 14.2.1.

6. Check for Corrupted Files: Sometimes, system files can become corrupted during an update. Running First Aid in Disk Utility can help identify and fix such issues.

7. Reset NVRAM and SMC: Resetting the NVRAM and SMC can resolve a variety of issues related to booting and performance. Instructions for this process are available on Apple's support website.

8. Create a New User Account: Try creating a new user account and see if the update process completes Success fully there. This can help determine if the issue is user-specific.

9. Reinstall macOS: If all else fails, consider doing a clean installation of macOS 14.2.1. You can do this by creating a bootable installer for macOS and then reinstalling the OS. Remember to back up your data before doing this.

10. Seek Professional Support: If the problem persists, it may be a more complex issue that requires professional assistance. Contacting Apple Support or visiting an Apple Store could be the next step.

Create config.plist:

For your specific issue, adjusting the config.plist file isn't directly relevant, as this is more about the macOS update process itself rather than Hackintosh configurations.

Updating macOS can sometimes be tricky, especially on older hardware or if there are software conflicts. Following these steps methodically should help identify and resolve the issue. If the problem continues, it might be due to a more complex underlying issue, possibly hardware-related, given the age of the device.