Guide for Enabling Broadcom Ethernet on macOS11+

[unitedastronomer]

CatalinaBCM5701Ethernet

You could use the CatalinaBCM5701Ethernet.kext provided in OCLP.

How to use:

1. Add your device-id in the kext's Info.plist.
   
2. Set MinKernel to 20.0.0.
   

Add these to Kernel -> Patch AS IT IS:

Identifier*	Find	Replace	minKernel	Comment
com.apple.iokit.CatalinaBCM5701Ethernet	E8CA9EFF FF668983 00050000	B8B41600 00668983 00050000	20.0.0	Broadcom BCM577XX Patch

Cosmetic

This is optional. You could also apply a Kernel -> Patch to show the correct model in System Report, edit accordingly to match your model.

Identifier*	Find	Replace	minKernel	Comment
com.apple.iokit.CatalinaBCM5701Ethernet	35373736 35	35373738 35	20.0.0	SysReport 57765 -> 57785 (Cosmetic)

3 5 3 7 3 7 3 6 3 5 -> 3 5 3 7 3 7 3 8 3 5

You could use HexFriend to find and replace these values instead of adding them on Kernel -> Patch.

Credits:

• Sunki for the source of patch.
• Andrey1970AppleLife for cosmetic patch
• Dortania for CatalinaBCM5701Ethernet