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Getting Broadcom NetLink BCM57786 Gigabit Ethernet PCIe Working on macOS Big Sur

To get the BCM57786 Ethernet board working on macOS Big Sur, you'll need to create a specific Ethernet string for your system and apply it to your boot configuration. Here's a step-by-step guide:

  1. Ethernet Strings Creation: You will need to use an Ethernet Strings Creator tool, which helps in generating the necessary configuration string for your Ethernet board.

  2. Import String to Boot Editor: After creating the Ethernet string, you need to import this string into your Boot Editor. This step is crucial as it integrates the string into your system's boot configuration.

  3. Apply Changes to Boot Configuration: In your Boot Editor, apply the changes to com.apple.Boot.plist. This file is essential for the boot process and system configuration on macOS.

  4. Reboot Your System: Once the changes are applied, reboot your system. This step is necessary for the changes to take effect.

After following these steps, your BCM57786 Ethernet board should be functional on macOS Big Sur. Note that these instructions are derived from general methods used for Ethernet configuration in Hackintosh setups and may require adjustments based on specific system configurations​​.

Guide 2: If you are experiencing issues with the Broadcom NetLink BCM57786 Gigabit Ethernet PCIe on macOS Big Sur, you can try the following steps to potentially resolve the issue:
  1. Check for Native Support: As of the latest information, the Broadcom NetLink BCM57786 chipset is not natively supported in macOS Big Sur
    11
    .     However, it's important to verify this information with the most recent sources, as support may change with future updates.
  2. Use FakePCIID Kexts: Some users have reported success in getting the Broadcom NetLink BCM57786 to work using FakePCIID kexts
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    .     You can try using FakePCIID_BCM57XX_as_BCM57765.kext and FakePCIID.kext to see if it resolves the issue. These kexts may need to be placed in the appropriate directory and the kext cache rebuilt.
  3. Community Resources: It's also beneficial to seek assistance from the Hackintosh community, as other users may have encountered and resolved similar issues. Forums and websites such as tonymacx86 and InsanelyMac are valuable resources for Hackintosh-related troubleshooting.
  4. Custom Kext Development: If native support and existing kexts do not resolve the issue, you may consider exploring the development of custom kexts or seeking assistance from developers who specialize in creating kexts for Hackintosh systems.
Please note that the information provided is based on community feedback and may require additional verification. Always ensure that any modifications to your system are in compliance with relevant legal and licensing requirements.
BCM57786 on Big Sur?

Does anyone know how to get this Ethernet Board working on Big Sur? I’ve just installed the OS on my Acer Aspire E1-570 and everything works except the Ethernet Board. Thanks in advance.

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