Install RehabMan's FakePCIID.kext and FakePCIID_Broadcom_WiFi.kext (
download from RehabMan's Bitbucket) using cVad's Kext Utility (
download from cVad's website).
Then use mackie's Clover Configurator (
download from mackie's website), mount ESP and edit the main config.plist. Enter the "Kernel and Kexts Patches" section and add the following 2 patches under "KextsToPatch":
1. Name = AirPortBrcm4360
Find = 81F952AA00007529
Replace = 81F952AA00006690
Comment = AirPortBrcm4360 fvco, 10.12, credit the-darkvoid
2. Name = AirPortBrcm4360
Find = 31DB4C3B7DD87512
Replace = 31DBFFC390909090
Comment = AirPortBrcm4360 whitelist patch (board-id), 10.12, credit RehabMan
Reboot. WiFi should work now.