This PowerShell script is available on the official website of Microsoft. You can copy the script from there and use it to import updates into WSUS.

Navigate to Computer Configuration > Administrative Templates > Windows Components > Windows PowerShell. Locate the setting “Turn on PowerShell Script Block Logging” and set it to Enabled.

How to Run Powershell Script on Startup in Windows 7. The Powershell Script application is a Windows-based program that allows network administrators to perform tasks on multiple computers at one ...