The update isn’t significant the Microsoft website that list the changelog for Surface states: “Surface Pro UEFI (v3.9.150.0) adds features to display BIOS password state and asset tag information, as well as improving boot times in some scenarios.” Surface users will get this update automatically, if you can’t wait, just go to Windows Update and make sure you’re installing the “System Firmware Update — 8/19/2014”. Source Surface Update History All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.