macOS Catalina(10.15) wifi issue

Описание: After upgrade 10.15 OS, wifi interface can't appear. Can't able to connect wifi in my MacBook after the upgrade os.

Solution:
Follow the below steps:

1 Download the modified wifi drivers http://ge.tt/8TVNIyz2/ 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)


Good Luck!