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Wifi interface completely gone after catalina update on 2015 MBP

After upgrading my early 2015 MBP from mojave to catalina, the wifi interface disappeared from the system.

I don't see it anymore in the list and can't add it. Even in recovery mode, network utility doesn't show it in the drop down.

System information says

  Software Versions:
  CoreWLAN: 13.0 (null)
  CoreWLANKit:  13.0 (null)
  Menu Extra:   13.0 (null)
  System Information:   12.0 (null
  IO80211 Family:   12.0 (null)
  Diagnostics:  1.0 (null)
  AirPort Utility:

This person on stackexchange has the same problem https://apple.stackexchange.com/questions/372025/missing-wifi-interface-after-upgrade-to-catalina?newreg=1904677ef3d840f0a87b73a2cd7bd342

Is this a known problem that's going to be fixed? I don't want to downgrade to mojave, restore backups and everything and then reupgrade again...

MacBook Pro Retina

Posted on Oct 9, 2019 11:15 AM

1 reply
Question marked as Helpful

Dec 7, 2019 3:29 PM in response to kisertn

This is what worked for me on a mid-2014 MBP:

  1. Download the modified wifi drivers (credit to Alex here) and unzip > you get a folder named WiFi_kexts
  2. Boot into Recovery Mode: restart your computer while pressing and holding cmd-R
  3. Open > Utilities > Terminal via Menu Bar
  4. Type csrutil disable and hit return
  5. Type reboot and hit return > computer reboots normally
  6. Open > Utilities > Terminal and enter  cd  and hit the space bar (don't hit return)
  7. Drag the folder WiFi_kexts onto the Terminal window and hit return
  8. In Terminal, enter  sudo mount -uw /  and hit return, then enter your user password and hit return
  9. Enter  sudo cp -r IO80211Family.kext /System/Library/Extensions/  and hit return
  10. Enter  sudo cp -r IO80211FamilyV2.kext /System/Library/Extensions/  and hit return
  11. Right-click on Kext Utility in the folder WiFi_kexts and choose open, click open in the following dialog, authenticate with your password
  12. Wait for Kext Utility to complete – this took maybe two minutes on my setup, and I got an error message in the end, as well as "All done"
  13. Reboot your computer normally and enjoy WiFi in Catalina
  14. If you want to turn on SIP again you can boot into recovery mode again and enter csrutil enable (hit return) reboot (hit return)

78 replies

Wifi interface completely gone after catalina update on 2015 MBP

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