24/7 Customer service, free technical support for all products. Download the Local Help. To download the complete Inventor LT Help System to your computer or local network for installation, click an installer for the supported language below. The Autodesk Inventor LT app will be found very quickly. Notice that after you click Autodesk Inventor LT in the list of applications, some information about the application is available to you: Safety rating (in the lower left corner). This tells you the opinion other users have about Autodesk Inventor LT , ranging from "Highly. Service Pack 1 for Autodesk Inventor LT fixes or addresses a variety of issues. This Service Pack updates Autodesk Inventor LT for all operating systems and languages. See Release Notes for list of issues addressed. Download Inventor LT SP1 InventorLT_SP1_xmsp (32 bit) (msp - Mb) InventorLT_SP1_xmsp (64 bit) (msp - Autodesk Inventor R4 update (, build ), subscription release Autodesk Inventor R4 update (, build ), subscription release, AnyCAD MB: Download the file and open it in the respective application, or copy it as instructed (ates). tricks, help, how-tos and FAQ for AutoCAD, LT, Inventor.