What Does This Do?
This utility installs the originally shipped version of the Intel Centrino Advanced-N 6250 AGN Driver.
This driver also resolves the yellow exclamation point error that may appear in Device Manager next to "Network Controller" which indicates that a driver is not installed for that device.

To ensure that no other program interferes with the installation, save all work and close all other programs. The Taskbar should be clear of applications before proceeding.
Download the INDWLL-00227099-0042.EXE file to a temporary or download directory (please note this directory for reference).
Go to the directory where the file was downloaded and double-click the INDWLL-00227099-0042.EXE file to begin the installation.
At the "User Account Control" window, click "Yes".
At the "Intel® Centrino® Advanced-N 6250 AGN" screen, click "Next".
At the "License Agreement" dialog, read the agreement, then, if you agree, click "I Agree" to continue with the installation.
At the "Finish" screen, click "Finish".
Restart the computer.
After the computer restarts, the installation of the Intel Centrino Advanced-N 6250 AGN Driver is complete.

This utility installs the originally shipped version of the Intel Centrino Advanced-N 6250 AGN Driver.
This driver also resolves the yellow exclamation point error that may appear in Device Manager next to "Network Controller" which indicates that a driver is not installed for that device.

http://esupport.sony.com/US/p/swu-matrix.pl?upd_id=6011