Select your drive from the list of internal drives in the sidebar. Select Disk Utility from the list of OS X Utilities.ģ. If you can’t connect to WiFi, follow these steps to update to version 3.28.2:ġFollow the instructions to restart your Mac in OS X Recovery. Type this command to update to the current version of the “Incompatible Kernel Extension Configuration Data” kernel extension: If you can connect to WiFi, follow these steps to update to version 3.28.2:Ģ.

So for those with version 3.28.1 of “Incompatible Kernel Extension Configuration Data” installed, you will need to connect to Wi-Fi and manually update to version 3.28.2 automatically-or follow Apple’s instructions on how to restore it manually. If you can connect to WiFi, your Mac will update to version 3.28.2 automatically, or you can follow the steps below to restore it manually. If you have version 3.28.1, you need an update. If the Ethernet connection on your Mac stopped working recently, check System Information to find out which version of “Incompatible Kernel Extension Configuration Data” is installed. The update seems to disable the ethernet port as one user stated the update “added an exclusion for the stock AppleBCM5701Ethernet driver!”Īpple has now acknowledged the ethernet port issue, and has posted a fix. A recent Apple security update has appeared to have broken ethernet ports for some Mac users, as reported on Reddit and MacRumors.

Mac ethernet no working