As an "options package," the Toolbox is not a standalone application; it requires a pre-existing installation of SIMATIC STEP 7 Professional V16 . It is specifically valid for SINUMERIK firmware version 4.93 and higher.
Before you even begin searching for a download, it is critical to ensure your system meets the necessary requirements. Installing the Toolbox on an incompatible setup will lead to errors or a non-functional installation. Sinumerik 840d Sl Step 7 Toolbox V16 Download
If you want, I can:
Execute the Start.exe file located in the unzipped master directory. As an "options package," the Toolbox is not