Once you have located the installer file (usually named something like AutoCAD_2012_Portuguese_Brazil_LP.exe ), follow these steps:

: Double-click the downloaded .exe file. It will typically ask for a location to extract the installation files; use the default directory unless you have a custom setup.

Create two shortcuts pointing to the same acad.exe but with different language arguments:

: After installation, a new desktop shortcut for the Portuguese version will usually be created. You can also change the language via the Start Menu under the AutoCAD 2012 folder. Key Technical Details

Note: Always ensure you have a valid license for AutoCAD 2012 before attempting to install any language pack. Unauthorized use of Autodesk software or language packs violates copyright laws.