Other differences between the 32-bit and 64-bit versions include:
The significance of "Firstuploads" for AutoCAD 2016 was threefold:
"Firstuploads" is a third-party uploader, and downloading professional software from unofficial sources carries heavy risks: AutoCAD 2016 Review - Forums, Autodesk
The phrase "Autodesk AutoCAD 2016 32 64 Bit Firstuploads" typically refers to a specific archived or pirated version of the software found on file-sharing sites.