New features in Windows PE 3.1:

• The number in the Version registry value is 3.1 to reflect the new Windows PE version.
• The Windows PE 3.1 base image contains Remote Network Driver Interface Specification (RNDIS) binaries. These binaries are also available for Windows PE 3.0 as a hotfix. For more information, see Knowledge Base Article ID: 979265.
• Windows PE 3.1 includes 802.1x binaries as an optional component. The file name of this package is WinPE-Dot3Svc.cab. This optional component is also available for Windows PE 3.0 as a hotfix. For more information, see Knowledge Base Article ID 972831.
• The Windows PE 3.1 base image contains fixes that are related to 4k/512e drive support. These fixes are also available for Windows PE 3.0 as a hotfix. For more information, see Knowledge Base Article ID: 982018.
• Windows PE 3.1 includes bug fixes that are related to the Windows PE version that is included with Windows 7 SP1.

Windows Automated Installation Kit for Windows 7 SP1 can be downloaded from Microsoft Download Center, or directly using the direct download link: waik_supplement_en-us.iso (English).

To install the WinPE 3.1 for Windows 7 SP1 supplement, mount the ISO image and copy the content on the DVD ISO image to replace the Windows AIKToolsPETools folder.