Apple has been the top-notch company when it comes to keeping its devices secured. It holds its security standards by providing the latest security and other relevant updates at all the latest time possible. But, this time the new kernel update has created a lot of turmoil for the Ethernet users due to some minor bugs in the incomplete kernel configuration data.
This new kernel update has rendered the Ethernet port "Broadcom BCM5701 driver" in Macs useless. Although many of the newer models do not have the Ethernet port, many users of Mac still have the Ethernet port and use it to access the Internet.
Fortunately, Apple has solved the problem very soon. It is now time to learn the method on how to fix Mac Ethernet problems as soon as possible and start using the Ethernet connection as usual. The main premise of the solution is to install the new update Incompatible Kernel Extension Configuration Data 3.28.2 and update your system. In that way, the error will be removed, and you will be able to use your Ethernet connection as usual.
Now, to download the new update you will need the Internet connection on your Mac. For users who have the Wi-Fi connection, it will be easy for them to download the update and fix the problem but those who do not have any other means will have to follow through some additional steps to fix the problem. So, let us take a look at how to fix the Mac Ethernet Problems in the subsequent sections.
As we discussed, the error is due to a bad update by Apple. But is it the case with your Mac too? So, to check that, we need to know what is the current update that is installed on your computer. After we know that, we can then proceed with steps on how to fix Mac Ethernet problems. To know what is your Mac version, you should:
Here is the sample screenshot of how the screen will look like at the end of the steps 4.
If the latest update version is 3.28.2, then you are on the right path and need not worry about the port problem. On the other hand, if you are stuck to 3.28.1, then you have got a bad update. You will need to fix the problem by updating to latest version 3.28.2. So, let us see two methods on how to fix the problem:
In case, you have Wi-Fi, and you can connect to the Internet, then you are on the sunny side. All you have to do is to follow the steps and update to the latest version to fix Mac Ethernet problems:
sudo softwareupdate --background
In case, you cannot connect to the Internet because Ethernet was the only mean, then you will need to revert your update to a version when your port was working and then update the system so that you can get back your system to the version which is free from the bug:
rm -rf "/Volumes/Macintosh HD/System/Library/Extensions/AppleKextExcludeList.kext"
Note: Replace Macintosh HD in the command line with the name of the main boot drive if you have some other boot drives.
Now, update your system to the latest version by opening the terminal app and running the following command line.
sudo software update –background
It can be challenging to deal with Mac Ethernet problems, but it is not impossible. The article can help you fix Mac Ethernet problems very well. But if the problem persists, it is advisable to follow the Apple forum or can take the help of a Mac Expert to resolve your issue.