How to Fix Mid 2014 iMac TDM not working on macOS

How to Fix Mid 2014 iMac TDM not working on macOS

Wi-Fi, Bluetooth, AWDL, Continuity and Location Services problems usually come from chipset support, kext pairing, privacy settings or network-location corruption. On Hackintosh systems, Location Services and Continuity depend on working Wi-Fi, Bluetooth, AWDL and correct AirportItlwm or itlwm/HeliPort behaviour.

Quick Checks

• Backup current state: Save a copy of your working EFI and run a full system backup before changing settings.
• Identify hardware components: Note down your exact CPU, GPU, Wi-Fi card, and motherboard/laptop model.
• Ensure utility alignment: Keep OpenCore, OCLP, and ProperTree updated.

Fix Steps

1. Create a rollback point: Make a Time Machine backup and keep a copy of your last working EFI folder before editing OpenCore, kexts or root patches.
2. Confirm the exact chipset: Identify the Wi-Fi, Bluetooth and Ethernet controller from System Information, Hackintool or Linux/Windows device manager.
3. Use the correct network stack: Match AirportItlwm, itlwm, HeliPort, IntelBluetoothFirmware and BlueToolFixup to the exact macOS version.
4. Reset macOS network state: Remove the current Wi-Fi service, reboot, add it again, then reconnect to a simple WPA2 network before testing advanced features.
5. Check privacy permissions: Open System Settings and confirm Location Services, Maps, Weather and system services are enabled.
6. Test Apple features separately: Verify normal internet first, then Bluetooth, then AirDrop/Continuity. Do not debug all three at the same time.

Do Not Continue If

• Do not continue if: you do not have a working EFI backup, a Time Machine backup, or another bootable macOS installer.
• Stop and capture evidence: if the machine stops booting, take a photo of the last verbose line before changing more settings.

Verify It Worked

• Maps can locate you without falling back to a stale location.
• Wi-Fi reconnects after reboot and sleep.
• Bluetooth remains available after a cold boot.
• Console no longer shows repeated wireless or location daemon errors.

Rollback

• Restore the previous EFI if Wi-Fi disappears completely.
• Switch from AirportItlwm to itlwm + HeliPort, or the reverse, if the issue is specific to one driver path.
• Use Ethernet or USB tethering while testing so you do not lose access to downloads.

Next Action

• Test now: reboot twice, reproduce the original problem, and confirm whether the same symptom returns.
• If it still fails: record the Mac model, macOS build, OpenCore or OCLP version, GPU, Wi-Fi/Bluetooth chipset, and the last visible error.
• Read next: use the related searches below for the nearest OpenCore or OCLP fix before making another change.

Related iATKOS Searches

• OpenCore · OCLP · EFI · kexts · config.plist · macOS troubleshooting

Original Question: "Mid 2014 iMac TDM not working."

submitted by /u/z2yzx
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Alternative / Duplicate Questions Resolved:

• "How can I revert to my working iMac?":
  

  I used OCLP on my mini mac and everything worked fine but on my iMac I was getting stuck on "less than a minute remaining" I read it can take a long time, but I waited for days.

  Now I just want to go back to my 10.13.6 and can't get it to work. The bar under the apple never finishes to load. I've created a bookable 10.13.6 USB but I'm not getting anywhere with this.

  Is there a way to revert back to pre OCLP or is my only hope complete format and reinstall?

  submitted by /u/Alllfff
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• "iMac 16,1 not working":
  

  Hi all I’ve got a 21.5K late 2015 retina iMac that has been running sonoma perfectly fine till last night then all of a sudden the performance drops crazily to the point of nearly unusable and the wallpapers stopped working and only went to white or black, I took the advice of doing the post root patches and allowed my computer to restart however once I get to the login screen I can’t even login I’ve been trying to enter recovery mode as well however I’m not having any luck any advice pls help!

  submitted by /u/Seenan123
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• "2014 5k imac":
  

  I have some 2014s here that will not install sonoma. I finally got it to finish the installation / wizzard and now the machine has no desktop background, will not connect to wifi, will not connect to ethernet, will not connect to usb adapter to ethernet, and will not install the root patches. Whenever I try to run the root patches I get an error message and whenever I try to do anything else it tells me an internal error occured and to re download OCLP, which I cant, because I have no networking.

  ​

  Any ideas?

  submitted by /u/Inline6Turbo
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