For a visual walkthrough on handling multi-part FitGirl updates and archives, this tutorial covers the extraction process:
: Right-click on the first file ( part1.rar ) and select "Extract Here" using a tool like WinRAR or 7-Zip . The software will automatically pull data from part2 and part3 to reconstruct the full installer.
: Before running the setup, it is highly recommended to run the Verify BIN files before installation.bat included in the repack to ensure no files were corrupted during the download. Helpful Resources
: If you encounter errors like "ISDone.dll" or "Unarc.dll" during installation, try limiting the installer to 2GB of RAM usage (a checkbox usually found at the start of the FitGirl setup) or disabling your antivirus temporarily.