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Fix wifi can not connect on Macbook Catalina

23rd February 2020 NodeJS
Fix wifi can not connect on Macbook Catalina

I got this issue when upgrading my Macbook Pro 2015 to Catalina. After research a lot on the internet with almost stupid other ways just wasting my time, and lucky I found this way can fix it, now I want to share it to everyone, who has the same my problem:


#1. Download the modified wifi drivers 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 <your WiFi_kexts>
( you can type cd <space> and Drag the folder WiFi_kexts onto the Terminal window and hit return)
#7. In Terminal, enter sudo mount -uw / and hit return
#8. Enter:
$ sudo cp -r IO80211Family.kext /System/Library/Extensions/
#9. Enter:
$ sudo cp -r IO80211FamilyV2.kext /System/Library/Extensions/
#10. Open Kext Utility in the folder WiFi_kexts
#11. 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”
#12. Reboot your computer normally and enjoy WiFi in Catalina
*Note:
If you want to turn on SIP again you can boot into recovery mode again and enter $ csrutil enable (hit return) $ reboot (hit return)

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