The reason and solution of Mac computer can't go through wired internet

For Mac system computers, the Internet is the same as windows, with WiFi and cable connected to the computer two ways, and the recent Apple has recently pushed users to send a security patch upgrade-"031-51913 incompatible Kernel Extension Configuration Data 3.28.1 ", and a lot of users installed in the computer after the patch, but found that through network cable connected to the Internet can not be online, users tested after the discovery of wireless WiFi has no impact on the problem is what causes, how should we solve it? Below with small series to see the detailed introduction bar!

Reason Analysis:

This time, the security upgrade called "031-51913 incompatible Kernel Extension Configuration Data 3.28.1", which led to Mac's inability to wirelessly surf the internet, will be blacklisted for Broadcom BCM5701 network card drivers. The Ethernet interface associated with this drive is also invalidated.

Solving method

1. First, Mac users who are unable to access the wired network can access the "about this computer"-"System Report"-"Software"-"install" to see if there is a security update for 3.28.1, as shown in the figure:

If you are unlucky, do not worry, you can still access WiFi for wireless internet access, but also a user said that even the wireless network can not be used. In response, Apple has quickly removed "3.28.1" and pushed new "3.28.2" upgrades, while also providing solutions to different situations for users who are unable to access the Internet, mainly to find ways to upgrade to "3.28.2".

The following are solutions that allow you to use WiFi access:

-Open Terminal Command Window

-Enter "sudo softwareupdate--background" and enter, upgrade "incompatible Kernel Extension Configuration Data" to the latest version, review it Again, Confirm that you have upgraded to the 3.28.2 version of the security update.

-Exit Terminal Command window, reboot mac

Through the above method, the user can solve the problem that the Mac computer appears to be unable to go through the net cable.